We (wifey and 2 kiddos) will be in the Phoenix area at the end of March. We're avid backpackers, but we've never been in the Supes. We'd love to get a 4 day/3 night trip in while we're there. I've been trying to dig through the information here and the web at large to come up with an itinerary that meets our group skill/endurance level and have good luck at water sources at that time of year. It's a little tricky though, mainly due to my lack of water source knowledge in the area. Hoping for some planning efficiency by picking the brains of those with the subject matter knowledge here, and would appreciate any help. Here's the main criteria aside from # of nights:
Daily mileage: ~ 5 miles, though could stretch to 7 on a "big day" if needed
Camp near water sources each night (and in an ideal world, a water source trail stop or two during each day as well

Avoid overgrown trails and scrambling - except for the kids to play around during down times of course
Is a plan like this realistic? Recommendations?