I'm impressed that you're modifying a Morini, that's for sure. But you honestly can't claim 50/50 having done it downhill, bro. Any bike is going to go faster down a hill. Try again, on a flat surface.
My 50/50 failed, I maxed at 47. Korado top end with a few goodies. I should've done some more portwork, but I gave up on it in favor of a kitted build.