Hey, welcome to the board!
There's no such thing as a dumb question when you're buying a vehicle. The power question (engine/tranny combo) really comes down to your expectations. This truck will not be fast. You may find it adequate. I wouldn't expect that speed or power would be a concern if you were even interested in this vehicle. It'll get you around and you'll be able to haul some stuff, just don't try a bed load of stone. This vehicle got 4 out of 5 stars from
www.cars.com users.
Given that everything else checks out (including the CarFax) I would pay attention to the engine. New engine at 45K? That's unusual. I've known people to beat little engines because they're used to V8s.
That price looks okay to me, you might be able to get it a bit cheaper. Check the blue book value (
www.kbb.com) and see what other local sellers are ASKING for similar vehicles at
www.cars.com, for instance.
That was good advice regarding the AC. Do that or take it to a mechanic or just expect that the AC might not work.
Good luck-
-Todd