Impossible to tell. It's just as impossible to tell how big they'll get in the wild, as it depends on the exact time between waterings. These could stay short or they could get to seven feet. I've had one that did that in the past indoors.
No. They actually wash off pretty easily, so I stuck the plant under a sink and then blasted it with azamax after it was done with that. It's just growing leaves back now. Then again it wasn't a pepper, so the mites don't hold on as well.
Depends. In this case I'd say no, because you mention that the plant sometimes makes pods that look like regular butch T. If there were two plants though, and one made butch T shaped pods and another Moruga, then you'd pick the one that you wanted the next generation to look like. In this case...
Last year, I did some experiments with peppers and polyploidy, but those were kinda goofed due to lack of proper equipment. This year I do more research in a much more professional way, on the fast plant Brassica rapa and the sundew Drosera adelae to see how polyploidy effects sexual and asexual...
Will trade corpse flower cuttings for heli when the plant gets big enough to take cuttings from. Which could take anywhere from a few months to a few years.