Are you living comfortably right now or pay check to pay check?
Living FT in an RV is not much different
Do you have income that will continue or do you have to supplement income with something else ?
Debt?
Do you have an RV to FT in or will this need to be purchased?
Purchased......cash or financed?
previous RV exerience?
Besides Campground Site fees, Fuel you will have all of the same kind of expenses------Med Ins, Vehicle Ins, Registrations, Maintenance/Upkeep, Food, Entertainment.
Takes sustained income or ability to generate income.