Gearing Question - 1/8 Buggy

Yeah, im more going for just bashing and casual driving out in the parking lot etc, not so much racing around a track. So it sounds like I may want to drop a tooth or two on the pinion to keep safe temps (atleast with a 46 tooth spur)? I forget what the stock spur is on the X-terminator, and I sent the whole center bulk and spur assembly to mike so he can make me a mount. Ill have to check it out once Mike sends it all back to me.
Id rather be safe than sorry here which is why I asked.