Hmm, I'm trying to learn 3d modelling now. Dunno how much time it will kepp, or if I'll be succesfull with it, or how good will I be, but if enough, and I'll have time, I'd like to help you guys out with some modells in the future. I can't promise it, but maybe... I like this project, and how it's going.
Well if I could vote for levels, maybe my list would be the next:

Tubelectric
Diamondus
Medivo
Psychedelic
Deckstar

About L r i, what moves are you planning for her? I think she would have an air dive-kick. Something like Sonic's "homing ball" attack, but lori shouldn't spinning, but flying towards the enemy & kick him from the air. (that should be the move in the place of Lori's ear-copter) If the enemy's too far, she should miss him, to make the attack not too powerfull.

I wish you good luck for this project!