Sorry just circling back to this unfortunately have not been on the water in a month... I do have a jack plate non-hyd. I have a 26 pitch fury prop. not sure on the exact RPM. I will check out the exact RPM next time I finally get out.
I have the same set up on my z8 and I get about 59 mph out of it. Probably have more than a light load of tackle though and (3) group 30 AGM batteries. The top R.P.M. is in the range mentioned above. I am interested to hear what if anything I can do to get higher speeds out of it.