Well we didn't have 4 kids like the original poster, but we did do it with our two kids for 18 months. It was pretty fantastic! Refrigerator space is generally inadequate so you have to make more grocery trips. We put the kids in the back bunks and we modified the gaucho to take a futon mattress.
Cargo space was tight. We used a Suburban as a tow vehicle and it did okay, but if I had to do it over I would choose a heavier duty vehicle.
Our AS is a 1974 31' Sovereign
. Now that we have returned home she is ready for some work, especially new axles.