Analysis Paralysis...Class A vs 5th wheel for family

So the oldest kid is 9. Seems like the sleeping arrangement would be a non-issue. Kids that age can sleep anywhere, and it doesn't bother them one bit. A few sleeping bags on the floor; one could even sleep in the "cave" under the dinette. During the summer, they may want to sleep outside on cots under the awning. Pitch a small tent on the roof and see who sleeps where.
Get a class A, and you and your kids will enjoy the drive in comfort and convience.

Kris