I've run that set up and I didn't like the bolly too well. The pipe
that makes the eng wake up is the OS pipe. Didn't look like it
would with the baffels and all but it really comes on. Dub Jett
designed that one for OS. Too bad it's out of production.

For props, the search is on. The best speeds on that combo where a Rev-up 9X7 reworked to a eagle type airfoil. Cast a couple carbon 9X7 Rev-up copies but they didn't do quite as well and the mold is long gone.

You can try all the higher pitch props but none of them would
come on for me. About the max pitch is 7 3/4 in good air.