0) Has to be $35k or less. We aren't rich.
1) Has to have a place to install a car seat. We have an infant, and we don't *plan* to sell her before we leave, so the ideal vehicle will have a back seat with either a seatbelt or some other way to anchor the car seat for her.
2) Has to have a shower inside. It's important to my wife that we be able to rinse off ourselves and the baby easily, no matter where we are. (Maybe I smell bad. Who knows?)
3) Has to have a toilet. It could be a portipotty, but it's important (to both of us) that we be able to do our business when and where we need to.
-We don't have an exact size in mind, which may not be very helpful. The best I can really say is, bigger than a Westy but smaller than a Class C RV. Something navigable. I think our ideal size is like a Sprinter or a large conversion van.
-Terrain-wise, I'd say 80% of the time we'll just be on regular paved roads. We will be doing a lot of camping, but nothing too rough, at least in the beginning.
-Fuel economy I would prefer be around 20-25 mpg, although I don't know how realistic that is. I'd say anything below 15-17 mpg might be a deal-breaker.
-Seasons of use would be all seasons. We're going to be full-timing for a while. We aren't planning on any excursions above the arctic circle or anything, but we would like to spend some time up north. However, we're prepared to make some sacrifices obviously. We aren't expecting perfection with our first go.