That little 6 runs like brand new. The 90 needs some grease, but it should be fine. Controls need some grease, but it should work out.
I'm buying a new 30 hp with controls and console to put on my POS 14' aluminum Snoco... it should fly.
That could be done, my cousin is a painter, and we've camo'd a few aluminum sleds. Plus i have a sneak boat i still haven't used, but now i've got my truck to haul it.
Maybe you can get crab in your sneak boat...

Maybe when you become a man you'll have a functional vessel.