Eteks are ~20cm DIA, ~14cm long. Youd need a fancy bevel/worm gearbox to get the power from them to 6 wheels. Not impossible (I think Big Nipper does something similar) but with the amount of power youre using, itll take a fair bit of space and weight to do it properly.
A possible weakness is that Nitrogen will only give you limited flips unless you have several large gas canisters aboard

Arent holes drilled in armour generally a bad idea?
Its not far off believeable for me, apart from trying to get Eteks in.