It all depends on your budget and personal taste.
If it were me, and with an unlimited budget, I'd get a Mac Dev Conquest and Gladiator, Bob's ridged grips, nickel volumizer and the new delrin bolt. And a TurboRev upgrade for the revvy too.
If you plan to use CO2 sometimes, then substitute the glad for a plamer's stabilizer.
If you're on a tight budget, consider a Centerflag 420 Cube preset, or maybe even one of the new 4500psi Crossfire tanks.
hope this helps