When we decided to upgrade we decided to go for a 34-36'. We ended up buying a 40'. WE are very happy with our choice. We found the floor plans in most of the smaller MH's just didn't suit us. Go look and sit in all from big to small. There are some remarkable bargains in the used market. The longer ones don't require much more maintenance than the short ones, in general. Don't worry about driving either, its not that big a deal. Caveat: not every National Forest campground can accommodate a 45'.
Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.