yea to much power wouldnt be good. if we have to much power ill put a stop or detent on it, so we can hammer the gas and then throttle back to “safe” for some high speed cruising, but i dont expect that to be a problem, as the plans for the boat mention the possibility of installing a vord v8 for power 
altho the plans for the rocket on svensons.com dont mention a finished hull weight, the “hot rod” on glen-l is a similar boat in size and design. on that boat, hull weight is approx 600, and is ment for v-8 power
the difference is that the “hotrod” is v-drive, and the rocket is a simple prop on a propshaft arrangement