One issue you have is being a full-timer which may complicate things a little. Are you staying in one place for a while to be able to advertise it? You're going to have to let people come to the RV park and to take it out on test drives. Are you buying another? What will you do if the first sells and you don't have another one bought already to move your things into it?
Going the consignment route you could buy the new RV, transfer all your belongings to it leisurely, and then drive the old one to consignment leaving the new one in a RV park or put it in storage for a week or so.
Full-Timed for 16 Years
.... Back in S&B Again
Traveled 8 yr in a 40' 2004 Newmar Dutch Star Motorhome
& 8 yr in a 33' Travel Supreme 5th Wheel