I owned a crestliner canadian 1650 for several years that came with a Mercury 60hp four stroke. 60hp was the minimum rated and max was 115hp. For a guy your size, and if you’re going to have more than a second person in the boat and any significant amount of gear, I’d say 90hp for sure. The entire time I owned it, I constantly wished I would’ve upgraded to a 90hp before I ever took it off the lot. And sure, max hp would be great and all, but do yourself a favor and hold off until the 90hp is within your budget. I just bought a crestliner commander 2050 and opted for a 150hp Mercury four stroke. Minimum is 115hp and max is 200hp. It performs great for my needs. Saving a little on the minimum hp outboard wasn’t even a thought for me. Been there and done that.