Replying to Tecnica Mach 1 MV 120 or 130

See title, I’m looking for maximum control so I can learn more tricks properly and not get bucked tf around in chop/bumps. I’m still a Type II skier tho, not great in bumped up steeps. Which flex would be right for me?

Also, is heel lift acceptable? I personally don’t want it bc it seems like it would make nosebutters/nose manuals much harder but bootfitters tell me that heel lift is possible in any boot. Probably should just get heel wedges if it continues to be a problem. Thoughts?