If you can look up the vin you may be able to track down what it was rated for. How long is it?
If you're gonna use it in the ocean at all i'd put as big a motor as it's rated for and you can afford. If its just gonna be used at wilson I bet a 40hp would be more than enough. Could you tell what was on there previously?
I'm a fan of two strokes. Mainly because they're lighter.
But with some of the new ethanol crazyness being thrown around a 4 stoke may be a better choice. Not sure hoe ethanol effects a 4 stroke outboard I would imagine it doesn't but something to consider.
Many 2 stroke outboards use a direct inject for the oil so you don't have to mix it yourself. My 60hp 2stroke merc on my old tracker had a reservoir and with "self mix" and I think that was a 2001.
Saw a boat today that was very similar called a bumble bee.
I miss the fuel economy with fishing at wilson, if I run up the lake in my z8 and back here I can burn 20gal!!! Plus about 1/4 tank of oil! But it's fun going 70mph!

Luck is when opportunity and skill meet.