Excellent choice on your first upgrade, BTW.
OK, ditch the following:
1 Antimatter (it's just too durn expensive in a rainbow deck)
1 Vampire Stiletto
1 Morning Glory
1 Flying Weapon
1 Nova
None of these really helps your deck out that much. You've got a solid theme going with the poison; don't dilute it with weapons and whatnot. It might be good quanta usage philosophy, but it's still clogging you with draws that don't add to the amount of poison your opponent is suffering from, which is bad.
Good quantum ratio is 40%, so once you take those other cards out you can lose a Nova and still be on top of the quantum situation.
Basically you want every card to be either Pillar, a Poison Producer, or a Pshield.
Unfortunately, you kind of chose an offense that doesn't lend itself to rainbow logic. Rainbow logic says to balance your quanta usage in order to maximize Quantum Pillar production, but poison requires lots of the same card over and over. In that manner, this deck might unfortunately fail on basic principles.