Raven I am running the LRP Dynamic 8 2200kv with a 15T pinion. Haven't had any temp problems with motor or ESC. Ran Hobbywing SCT Pro and now RX8 Gen 2, both without fan, low or no timing, medium punch. This gearing has been working well for me.

I can make 15min on a pair of 5000mah packs, and only putting 2500-3000mah back into each pack on the charger. My track is smaller, so never really running wide open throttle, lots of acceleration and braking though. Shouldn't have any problem making 10min even on a bigger track with the 2100kv and 15T.