I wouldnt contemplate the Honda 90 either, it was my last engine on a 5.7 and I found it to be supremely gutless .. my transom was rated to 135 , and I forever wished I taken that instead , if your boat gets loaded with any kit, that 90 will really struggle, nice engine though it is
When I tried messing with props, I fitted one slightly larger than the stock one, and the transformation astounded me, it totally killed the engine, which adds weight to my above point. Theres nothing wrong with 4 strokes, but you'll need one with lots more 'Go' than that one