8XL, Mamba Max or Quark 125 Pro and heat

[miniGranis]

Hi all.
If all turns out well I might get an oppertunity to build me a E-Revo with some help from a local magazine. The idea is to build an E-Revo that can keep up with a normal equipped nitro Revo.

I want to keep it stock as much as possible and try to do it "on a budget".
My thoughts are to use Mike's new motor mount, original tranny, probably 2x MaxAmps 2S2P 8 Ah LiPo (I have them in my E-Maxx).
For the motor I have to something like an 8XL (or similar) in mind for budget reasons.
ESC will be Quark 125 Pro if budget allows it otherwise a Mamba Max.
If some has better ideas for a setup please let me know. I currently cant charge LiPo above 3S since I only have an MRC 997, so that limits my options abit.

How would the above setup deal with heat and thermal issues ?
I am used to the Hv-Maxx so I got fans all over the place in my E-Maxx :002:
The Quark can easily be cooled with heatsink+fans but what about the Mamba Max ?
I also wonder about the 8XL (or what ever you suggest) would that run hot as well ?
I'd really like to use the 2x2S2P 8 Ah (4S) LiPo to the full extent runtime wise, ie be able to go for about 30-40 minutes without any heat issues and still keep up/beat the nitros.