E-revo on 2650 3s gearing question.

[NoControl]

I recently got a MMM 2650 for the e-revo and since have had it geared for 30mph with the stuff I had on hand 18t stock pinnion and 54,58, 62, and i think a 68t spur, presently I have the spur as 58, after several basjhing runs around the neigborhood, I checked the temps and the esc is 150+ the motor is 150-170 and the lipos are just below 100. Does this mean I'm undergeared or overgeared?

Thanks for any help.