worth the investment or not?

Even a newer RV can be a project just by the nature of the beast. Mold would concern me. There is probably a LOT more work that will need to be done than what you see superficially. You can save a lot of money doing it yourself but it will still take a good bit of money and time. Ask yourself, do you want the project or do you want to go Rving? And think about it good and hard. Will this project end up sitting there for years until it's done? Will you give up and end up losing your behind in the work and money you have in it? Because you won't be able to sell it for what you put in it. Get a good handle on what you will think it will cost and double it. Take that amount and look on line to see what you could buy that needs little to no work. There are countless used RVs for sale in good shape for a decent price and you could buy a brand new TT for what this will cost you. Also, are you married? I know I wouldn't be if I brought a project like that home. Not to mention my covenants wouldn't allow me to have it on my property. Just points to ponder. Free always sounds tempting but in this case it means spending a lot of money and time on something that you will never get a return on with the exception of enjoying RV-ing. You have to really want to do this because it's not an investment.