Revo motor selection dilemma

[phidailo]

I've recently installed the Revo hybrid diffs-buggy gear ratio. Now with this setup I'm having a hard time picking a motor to use with the MM on 4s. I have read that there is success with MM/Neu combo but I don't want to take my chance. This means I would have to pick the 1515 1.5d(2700kv) to get aroune 40mph with 16/38 gearing. Does this sound about right?

If I go with 8xl the setup will get too hot.

Any suggestions?

Thanks