I currently run a 200 SHO on my stratos 294.
Prop 1 is a 25P SHO which runs 5800 when jack it up with the hydro to 2 inch prop to pad at 68 mph

Prop 2 is a 23 P high 5 which will go over 6000 and 63mph with 5 med pvs plugs

I'm happy with my high 5 for big waves and not surfacing or spearing, so I am leaning towards a 25 bravo FS for a good all around option. I see both the yamaha OT 4 and bravo FS both have vent systems but the bravo has a larger diameter which can help with heavier loads, while the OT 4 is likely stiffer.