Welcome to the team K Spec!
I wouldnt say that I am a gearing guru but with the HV Duo motors I definately gear higher than most motors...For example most guys are gearing a rubber TC 5.0-5.1 at Seattle Indoor Raceway in 13.5....I am geared 4.8-4.9 with my 13.5 and I have great rip at 150 deg!