Michael Patricia,

You are so fortunate to be able to become full-timers at such a young age. Go for it. As to a used motorhome:

check this out

http://www.oodle.com/vehicle/rv/-/make_foretravel/

We started our quest to become full-timers two years ago and now have 13 months to go. I only recently learned about Foretravel motor homes. New ones are and were very expensive, but older units can be had for very little money. You get an older unit with tons of quality. IMHO the best way to buy is directly from an owner who has service records.

Have fun.