60 mph mamba brushless setup for e-maxx, would this work?

[extremexmods]

So maybe 12 cells, 7XL, mamba max esc gear for 45-50, keep everything lightweight meaning no added aluminum. I said in an earlier post that I decided to tone things down to 50 mph. Lipo is not an option, my family has banned lipos and I really do not think they are safe enough for truck bashing use. My current setup is the kershaw designs dual 970 ,motor setup, which goes 45 mph and has a very high center of gravity, much higher thank stock, I set them up with a high ground clearence and had now difficulty handling the truck.
Take a look at the picture of the slammed maxx on this page, I am using those towers and will slam the truck low for street handling. I only hope the mamba esc could take a 7XL on 12 cells, but I am prepared and to use an 8XL if I could safely gear it up to 7XL ground speed. In all cases, lithium is out of the question, decision by family (parents), and something I can't control. About the motor bearings, I would never run a motor that fast, I just was curious about what the motor would do at those speeds. I guess it would self destruct. My motor will be heatsinked. I will spend most time in first gear, second gear only for occasional speed passes on the street.

[extremexmods]

Just researched and have figured the 7XL is too much for the controller, I will use a the 8XL instead.