Nobody wants my advice but I'll give it anyway.
Don't buy $60-80k rvs. The more you spend, the more you'll lose. It's like investing in a mobile home. It's generally a bad idea. If you have it to blow....more power to you.
There are bargain models out there, that are cheaper and sell better used, especially if they can be towed with smaller vehicles.
I don't care how well you maintain your 20 yo trailer...nobody wants to buy it except maybe for a deer lease. You won't get a lot of money. Then you get hit with the price of a new one with little to put down from the old. Sell 7-10 yo imo, depending how much you like your unit. Or keep it forever and good luck!
