So I picked up a 25" shaft (yes I know I need a 20") Honda 130hp 4 stroke and according to the interwebs it weighs in at almost 500lbs. Should I be worried about the weight?

My plan is to close off the transom (pretty solid) with maybe some 3/4" Coosa or plywood, glass it over and mount the Honda to maybe a static jack plate to add even more strength and support.

What do you think?