WE WON THE LOTTERY!, We are moving the US and buying an RV!

Another option to consider if you want to go small is a truck camper. About the same price as a small MH when you compare like for like.

If you want to get off the paved tarmac, you can get 4x4.
If you want to set up camp and have a vehicle to drive around in, you can take the camper off (or use it while on the truck).
It does have a large bed over the cab that can be left ready to use.
Plus when you aren't RV'ing, you have a truck to haul stuff with.

The downside is floor space and storage isn't as good.