Custom/Hybrid yamaha 701 in x2, prop help!!

Hey guys doing a 701 swap and am wondering if a 15/20 pitch solar prop would be a good choice?? Let me know what you think. Also have a 14/19 available to me if that would suit my setup better. We are running stock 701 with west coast pipe hooked up to the stock 650 pump. Any help would be great!!
 
I Would run a like a 9/17 or 9/15. I have a ported 750 with factory pipe and 200psi in my x2 and I am running a solas 13/18 and its a bought perfect but I am also at higher altitude, I am sure your trying to emphasis the bottom end with putting a 701 in the ski so I defenitly try to get a lower pitch prop.
 
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