Yo KrispyKritter: I just got a review copy of "One Best Hike: Grand Canyon" by Elizabeth Wenk and published by Wilderness Press (2010) that contains a description of the route you plan to take. Might be worth a look at the bookstore---$14.95
If you want to go the 'freebie' route there are numerous trail descriptions on the Net:
http://www.gorp.com/parks-guide/grand-c ... 47138.html
http://www.gorp.com/parks-guide/travel- ... 58980.html
The Park Service has some handouts on each trail. Lots of goodies at this location:
http://www.nps.gov/grca/planyourvisit/c ... mation.htm
The Grand Canyon Association Video is here (or on Youtube)---see if you can spot one of the members of the forum:
http://www.nps.gov/grca/photosmultimedi ... eocast.htm
You can also simply do a search on 'Trail Descriptions Grand Canyon"
Since you are planning several days, you must train to be away from the comforts of home for several days. One mistake made in training is that people go on a single long dayhike with their weight, gear, boots, etc and then get back home and rest up before hitting the practice hikes again. They do the necessary physical exertion but then return to all the creature comforts after the exercise. They squeeze a recovery day (or two or three) in after the training hike. This is contrary to what you will have to do with a multiple day trip in the Canyon. You will need to be ready to hike for several hours, sleep on the ground, eat the food that your are going to eat, go to sleep and wake up according to 'Canyon' time, and then hike the next day. This means you need to stay aerobic on your practice hikes----if you go all out and anaerobic, you will build up lactic acid in the muscles and, since you need to get up and go the next morning, your muscles will not have recovered and you end up doing the 'Kaibab shuffle' to get back to the rim. In your practice hikes, take it slow (about 50-to-60% of what you could do if you pressed yourself), rest often and get the legs up in the air to circulate the blood, do not create lactic acid in the muscles. You will know you are training correctly when you finish your dayhike and can go about your normal business without collapsing on the couch after a hot shower and supper. You should be able to walk to the ice cream stand at the Bright Angel with no more agony than you would if you were on a causal rim walk.
If you are not used to sleeping on the ground, you will need to practice this as well. Do your practice dayhike, come home---eat the same food that you plan to take on your hike, take a cold shower if you plan on taking a dip in the creek---then hit the sleeping bag on the floor. Train yourself to the same time frame that you will be under at the Canyon. One of the most common reasons people get turned-off to backpacking is they just can't get a good-night sleep when outside. Watch how many people are up and packing at 4 am---it's not because they are gung-ho to hit the trail, they couldn't get any sound sleep. They were in a fitful sleep, tossing and turning, anxious to get up and out of the sack and finish the durn hike. It is the combination of soreness, your stinky self, the different sensory input, and trying to fall asleep in a strange environment. For years I traveled for business and had a terrible time sleeping in a motel room (until I packed my own blanket and pillow---my teddy bear was too ragged, having lost an eye, to make the frequent flier miles). Get used to sleeping while grungy in your sleeping bag---your brain will not then be kept awake by all the strange siganls as to how you are sleeping---the brain registers the soreness and the strange environment as Danger! and will keep you awake. If your wife is a tolerant woman, pitch the tent and crawl inside so you get used to the smell, feel, sound, of sleeping in the tent.
Retrain your circadian rhythms to match the hike. If you plan to go to sleep at sunset, do this at home. If you need to wake yourself up earlier than normal, practice with your fluid intake before going to sleep. It may take a little testing, but you will soon arrive at an amount that will wake you up to urinate. If you pee the bed, well, you didn't practice enough. And keep your paws off my dry sleeping bag. The older I get, the less sleep I need. I'm the guy up at night with a flashlight searching for rattlesnakes, fiddling with his gear by moonlight, and the first guy up in the morning clanging my stove to make coffee---in other words, avoid sleeping next to me or a group of ringtail cats.
Since you will be sleeping in designated campgrounds, try to select a site that is far enough away from the banging doors of the restrooms. Avoid setting up near a group site---a passle of giggling boyscouts will keep you up all night. Keep a piss bottle handy to avoid stumbling around at night for the restrooms. Keep it separate from your bottle of Gatorade. Phantom Ranch has 100's of bark scorpions out at night so take care where you stash your boots and your gear. I've seen more rattlesnakes at Indian Gardens---there seems to be more deer mice up there feeding on hiker crumbs. Ringtails are more numerous at Phantom and will help themselves to your munchies. Both locations have metal ammo tins to hide your food (the Park Service was looking to remove these from the more remote trails---too many people were using them as trash cans to avoid carrying their stuff out of the Canyon. Not sure if they have done this in the other Corridor campgrounds).
Avoid the 'lunge' step on the way down, an exaggerated 'keep on truckin'' step that stretches the hamstrings and can rub blisters into your heels and slam you toes. On the hike up, slow even steps, use your hiking poles. Keep your heartrate under control and stay aerobic. Practice the 'Mountaineer Rest step' for the step sections of trail:
http://www.scoutingmagazine.org/issues/0410/d-outs.html
Your first time hike should be your inspiration to come back for many more hikes and Canyon adventures. Take that digital camera and document the adventure. I envy you your first time hike at the Canyon!!!!