Quit being a baby and customize stoneproof+confuseproof+berserkproof+(poisonproof, or whatever). That will save you pretty much all of your trouble at Omega. One-eye at monster arena sometimes drops triple AP armor, onto which you can customize Overdrive->AP, etc. with a little bribing, and rack up AP.

If you've captured any "Tanks" (Halmas?) and Flying Deaths from Omega, and you don't want to bribe, then just steal from the monster arena versions to stock up on musks and hypello potions.