All depends on what your needs are I guess. As mentioned earlier, you can full time in anything. Crap, people do it in vans. When we did it, the 40' fiver was ok, but even then we hauled a 15' cargo trailer with the second vehicle to use as a mobile shop / storage area. After all that, provided I had the trailer, I know I could do it in a lot smaller rig since we spend very little time inside, even at home, unless it's homeschooling time, and even that can be outside sometimes. I say take an extended trip and try it. Never know if it'll work until you try.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.