Air Tank Help

Will your dive shop fill past 4500 psi? Most only go to 3,000 so I would be sure to they do. Honestly by the time you part out all the Chinese stuff to get what you need you haven't saved that much money. The Utah AirMarksman is the best deal at $600 with everything you need to get started backed by a company you can trust I would save up a few bucks and go that route.
 
Yes you COULD save some money but will you? I personally would not risk it. Buy from Joe B. He really does have the best available . If you are going to have the tank filled at a dive shop buy the big one. It will matter. If you plan to buy a compressor any size will do. Save money buy once

Your saying get the Great White which is 100 cu ft I believe?
 
Yes I think if you do the calculation ( available on AOA sight )you will find that you will have significantly fewer trips to the shop to refill the tank. Neither the 73 or 100 is particularly “handy” or portable so you may as well have the advantage of more air. It’s not just that the tank is 30% larger because you don’t drain the tank completely. You probably get twice as many fills to your gun.