A lot of good information here but keep in mind that the engine/prop combination that works best for YOU will likely be different than the next person as we all run our boats in different conditions, with different loads, and with different goals. Be honest with yourself on use/how fast you’ll be operating most of the time. Use someone with a similar setup/use as a starting point and go from there.
More food for thought: I know two people with 150hp 4-strokes. 1985 Overnighter with a Yamaha F150 and a 1995 Adventure with a Suzuki DF150AP. Both do not have hard tops but run heavy with fuel/ice/crew. The captains fish the same (usually rough) water and mostly troll around 7-8 knots. The boats are not as efficient on plane as 200hp 4-strokes but if needed they have enough power to stay out of trouble. For our use the 150s are sufficient and boat handling skill outweigh brute hp.
I have a 208 with a Suzuki DF250AP. It’s heavy and has way more power than I need but it’s not worth repowering since I re-propped for efficiency at trolling speeds.