emaxx brushless motor decision

[honda237]

I have the new emaxx and trying to decide on the motor either medusa 36-60 or feigao 8xl. I will be running 2 2cell 6000mah lipo and a mamba monster speed control. I mainly just bash but I want to go about 40 mph and atleast 25 minutes of runtime. I will run in the snow during winter. I don't want to worry about over heating. I would like good reliablity. What gearing should I use. If I get the feigao I will get the rc-monster heatsink clamp. Can you please help me decide.