So i need some help here from the group.. I currently own a FX impact and I am now looking for a 4500 psi tank that I can refill the gun at least 8 times before needing to refill tank.. Refilling the tank is not an issue as there is a local dive shop that will refill 4500 psi. SO where do I begin? what do I need to make sure I have the right tank. Can everyone please recommend a solid tank set up that can be purchased online? Any and all advice and guidance would be appreciated. as 4500 PSI is no joke.