You're on the right track. Use an 11mm carb, (There's been a listing of all the carb numbers that are 11mm venturis here in the forum), electronic ignition at 28 degrees BTDC, and I use two 7/16" or 1/2" i.d. muffler outlet tubes on this size engine.

My 30cc Homelite turns a 16 x 8 APC prop at 9400+ rpms, but it has all the porting mods, etc. as well.

Have fun, it's a good engine,
AV8TOR