I've had a 16' Tracker Deep V, a 17' Hydrasports bass boat with a 150 Evinrude, and now the 17' Sea Nymph.
The tracker was new, but the bass boat, and the sea nymph needed work.
A glass boat restoration, is AT LEAST 500 times harder than an aluminum boat. That is no misprint. 500 times harder.
My bass boat was in an accident, and I repaired it, and re-gelcoated it. I sold it before all the sanding and buffing. EFF that.
Plus, an older glass boat like that, when restored will still just look like an old bass boat. The aluminum boats like that, when restored can pass for a new boat.
I would buy the aluminum boat, restore it, along with new paint, modify the bass boats trailer to fit the aluminum boat, and pull off any other parts off the glass boat, and then trash the rest.
Also FWIW a 70hp on a glass bass boat will be no screamer. If you have any ideas it will be like a modern bass boat....... [-X