Hey now, that TM
is a nice score, perfect for your little tinny, A little sanding and paint on the motor housing and it should be good to go,,, if it goes
I agree with BWR, hook it up to your truck battery and see if it works, just make sure the prop isn't going to whack anything when you connect it, my buddy almost whacked his leg
showing me his new/used TM. The short amount of time you are going to have it connected to your truck battery for testing won't hurt anything, a couple minutes at no-load, no problem.
On your front deck A frame, you might want to put 2 pieces of plywood under the ends of the 2x4's so the corners are not resting on the hull, kind of a pad to help distribute the load. If you are standing on the deck, the corner of the wood will dig in and dent the aluminum hull after a while. Even if you don't stand on the deck, I think it will dent after a while, deck bouncing on waves, trailering. Just shave the corner down to the angle of the hull and tack on a scrap of plywood.