That would be me.
I have a 89 SeaCraft 23WA w/89 200 Merc. Boat has been stored inside except when in the water fishing. The engine still runs very strong and well maintained. Not much to check except for the transon, I don't think you will have the worries that the east coast people have w/rot unless the boat has spent the last 15-16 years sitting outside uncovered. I will run my 200 until it dies as there would be much value in trade when I repower.