2. Not until you have at least a new bolt, valve, and HPA. Max output 500psi.
3. I've heard good things about these.
4.Expanding on #2: Boss bolt. Nitro (HPA) is a good idea.
Revy and boomstick are fine.
Be sure you have enough money left over to buy paint and actually play the game.
SRT E-Force #08330: The Gatfish
-Air America Apocalypse 68/45
-Dye Stainless Steel
-Viewloader EvLution II with Z-board
-Check-it Sure Fit Feedneck
-Dust Black CP Rail
...And yes, Aluminum is for pussies.
I'm like a tiger in a zoo.