Upgrades?

[Antipop]

Hey-

I've got an older-model Piranha with the following additions:

Dye SS barrel
PMI Perfect X-Chamber
In Yo Face Drop Foward
9 volt Revolution hopper
Steel hose kit with Brass fittings
20 oz. tank
Neoprene tank cover

I don't really want to go Nitro yet, and I'm already considering Sticky grips and a low pressure chamber. Any suggestion on what other upgrades are reccomended?

Thanks!!!