the BL version of mine (AE Rival) is right in the same weight class, 13.2lbs, dont know if that is battery factored in or not. MGT's are just heavy, strong, but heavy lol.
ahh, never ran lipos myself, for 1/10 from what I've seen is that 3s would be enough, 4s capable esc would be nice cuz you know that its not pushing the esc's limits
but as far as the system itself being better i have no idea