Mutant pheno, how use full potential?

I would stop with the fimming and topping and let it grow out. I don't think this is mutant genetics, I think what you're seeing is the result of the techniques you've already done here... But now it's time to let her grow ... if you're not planning on doing a scrog, at least plan on some good LST. Leave the leaves alone - she needs those marvelous light catchers - but if you find they are blocking light to a bud site, you can tuck them under for a while until you either scrog or do some LST... Good luck! Looks like she IS going to be a monster!