I think theres a list somewhere on this site that includes a good list of things to look out for. Nice looking boat and that T Top looks pretty stout.
You mentioned pumps, I wouldn't trust the old bilge pumps those would be definite replacement item. Along with some re-wiring.
Hydraulic steering helms don't like sitting for a long time, the internal moving parts get sticky good chance the whole system needs to be flushed and ?
Negative side battery cables always seem to go first, low voltage to your electronics creates all sorts of gremlins.
Trim tabs probably need to be bled if hydraulic.
I'd give it a good wash and save the hardcore buffing for later.
Trailer axles, is it leaf spring or torsion bar? Leafs are easy to inspect, torsion bar just be sure the axle doesn't look rusty at all or you could be in for a nasty surprise they rust from the inside/unseen then bad things happen.
Trailer brakes, bunks and random brackets, lights...
Depending on how bad the soft spot is you might be able to fix that without much surgery.
Transom inspection?
