Cobalt puller motor experts needed

[d-fly]

Building a 6x6, Axial axles with stock diff gears. Using robinson racing 32p 56t spur gear and currently have 11t pinion. (pinion can be changed) Using BRLX HH ESC. Rig will probably be over 15 LBS

I have a cobalt 7t for the truck. I am afraid the 7t may get to hot on 3 cell in this set up. I may have the opportunity to get a 14t.

Here is my question.

Do I run 7t on 2 cell and call it a day?

Do I run 7t on 3 cell and try 11t pinion and get a smaller one and watch the temps. I think it will be getting hot.

Do I try to get 14t and run 6s in it. This will be challenging to try to fit two battery packs (2 3 cell packs) one 6 cell back is to thick to fit/ hide under the bed I am going to build.

Here is my build thread as well. Please check it out

6x6, My First Build.

Hope holmes himself can chime in as well.