Update: picking up a 264BHW from Riverside CA. Pricing was great, dealership was very helpful and it's a quick 4 hour drive away. Had better pricing in Texas, but it was 14 hours and 1000 miles one way.
Feel comfortable with the specs, and will have 2 kids in each of the bunks, and our baby in a pack and play I top of the dinette. When he's older we will have our 2 boys (currently 1 and 2) and 2 youngest girls (currently 2 and 3) share the bunks, and our oldest can sleep where she wants (dinette, couch, tent, floor, etc).
It's going to be tight quarters, but that's half the point to camping anyway, and I only expect us to be inside in bad weather and for sleeping.
Party on and happy camping!