Good questions, not enough details.
Your opti is a hard motor to prop, it's power curve is narrow and it's pretty gutless on the low end, sorry to say.
AND...it's got a hard rev limiter at 5,700 rpms, you don't want to hear that thing screaming at you all the time, so the details you'll need to share: Whats your current rpms with the lazer at WFO? THAT number will say what you really need to be running. It won't be that 13, not gonna work at all.
Marble Falls/Seadrift TX