Help with Hull ID and Inspection tips?

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howdy friends, going to check out this Wellcraft soon, I believe it is a V20 fisherman, correct me if I'm wrong, the seller says its 22'

I have been reading lots about rotted transoms and stringers, which has me spooked, I understand checking the transom is easy enough, but are there access ports to get under to check out the stringers?

what is the best way to check for rot when inspecting a boat that you can't disassemble?

also, what are your thoughts on that 115 pushing it? will it be enough? I'll likely remove that kicker motor immediately to save weight
planning to use it for fishing in the sea of cortez, Baja