I’d say there’s 100s of other options between sinking $10k into an old trailer (and however many hours) to end up with an old trailer that from the sounds of it won’t be worth $10k when you’re done, and $63k for a “new” one.
Idk how you could actually spend that much, responsibly, on a TT unless you literally got the biggest Arctic Fox or Grand Design unit they make.
I’d sell the old one for whatever I could get for it and go get a newer trailer.
With a budget of $30-40k you could buy 95% or more of the relatively new, used TTs on the market.
Frugal and a $63k TT don’t belong in the same sentence imo.