If you are seriously thinking about full-timing, I would consider a 4 season rig. Based on your budget, have you considered buying a lightly used 1 or 2 year old model? Sometimes people get in over their heads, death in family, health problems, etc and this usually benefits the buyer.
If you go this route I would stay away from dealers and recommend private sellers through rv trailer, craigslist, etc. There usually is no factory warranty on a used unit and at least buying from the owner and you can at least size up the owner and tell if they actually took care of it or not. Most dealers just want to move used units and don't really care how they have been maintained other than the tire shine they apply when you take delivery.
My 2 cents. Good luck.