I like Lara Bars which are made of raw fruit and nuts. My boys prefer Clif Bars. Both can be found at Costco, Target, Walmart and Trader Joes as well as many grocery stores. I wouldn't bother drying my own fruit or making my own energy bars. I have recipes for granola bars but they tend to fall apart and with all that bumping around in your backpack, you'll be eating alot of crumbs.
I ate lots of dried fruit and nuts while backpacking. But would bring some 'real food" like fresh fruit for the first day. For dinners, I liked stuff like Near East brand rice pilaf and mac and cheese with butter but no milk, rather than the dehydrated packages of stuff from the camping stores.
Wow, backpacking with a bunch of other mamas sounds like fun. Have a great trip.