1982 20ft sf repowering

[Kwseacraft90]

I’m debating on the engine to put I keep hearing these are very bow light boats keep in mind this is my first one .. I seen a decent deal on a 200xs which weighs 505 would that take away from the ride ? I seen up to 250xs on them but I’m not that much of a speed demon but I don’t wanna do more then 50 but I would love a fourstroke I prefer to do a lot of fishing on it first . I have a 140 Suzuki 4stroke but I read and heard from ppl I might not get passed 40 and that’s not me lol