I have a Feigao 9XL & 9920 combo in my Emaxx, which is only 1lb or so lighter than an MGT I think, and it flies. It delivers an impressive amount of torque on just 12 cells, but on 16 cells it delivers very nice power and a decent top end too. Runtimes aren't too bad either, if you went with a hotter wind like a 7XL you would have less runtime and more heat.
I run a 10XL on 16 cells and have no problem smoking nitros.... A HV-Maxx can even keep up with nitros...Basically any BL setup could keep up with a nitro.
I have no trouble smoking nitro's, even on 12 cells it will outaccelerate any I've raced, but will often top out eariler if theres enough space for them to eventually wind up into the 40's. On 16 cells, I would be curious to see what sort of nitro engine it takes to match it, because I've not gone against a nitro truck that can yet.