Kingdom Hearts II Level 1 Mushrooms

So, I'm doing a level 1 Critical Mode Challenge (Dying in two hits is tough, but not impossible). I decided that I would play the entire game up to the Gold Crown without adding any bonuses I couldn't take back. That means no leveling up, and absolutely NO regular stat ups. Limits, Drives, etc. are OK. I also made two exceptions: Drive/Summons can be leveled up, and AP Boosts can be used.

I beat the main story, and I'm working on beating the Org. XIII Data battles (halfway done). But I'm reaching a point that I can't push off anymore: The Mushrooms. Specifically, V, VII, and X. I've heard they are IMPOSSIBLE at level 1 without stat boosts, but I don't want to give up on my rules when I've gone this far...

What I'm asking is, what are the BEST techniques for the Mushrooms? I don't care how cheap it is with Limits, Drives, or Summons. Anything can work.

I'm afraid I might have to use stat ups, but if I have to, I have to. I just want to avoid them at all costs. Except for cheat codes, of course.

 

This person on youtube could help you. http://www.youtube.com/user/scyllas2