Super Jet Solas 16-19.5(H) to 15-18(X)? Will my setup over turn it?

So some time ago I snapped the drive shaft off in the prop.

As the existing prop stator housing etc is pretty flogged out and quite tall I'm looking at my options

I've found a cheap 2nd stator prop and shaft but as per the title it's of less pitch.

This obviously will loose some top end but gain punch and acceleration. My concern is if my setup is too much for it?

710cc
Riva head 35mm domes
R&D dry pipe
Epic cdi
Dual Black Jacks

It pushed 96km/hr gpsd flat water with the old impeller

It's no hardcore freestyle ski (obviously with a 19.5 lol) but do take it in the surf and flat water areas too. Bit more punch from low would be nice.
 
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