paintball tank as a fill tank

I want to get a 4,500 PSI tank to fill my condor, but do not have the cash to drop on a guppy/great white.

I want to know if there is there anything that I need to know about converting a paintball CF tank 4,500 PSI 68 CI tank as a fill tank for my condor. Well other than get the biggest tank available.

1) I thought I read that some paintball tanks have a regulated low pressure output. If this is the case, can the regulator be changed or removed to allow higher fills
2) I am sure that I can find local fills
3) how often does hydro and visual need to be done

Thanks Cally
 
Yes, most paintball tanks are regulated down to a final output of 900-1800 psi (so I'm told). My local paintball guy said he could order me a Ninja carbon tank, rated to 4500 nominal pressure, and with an output pressure of 3000 psi. This at a cost of 150 bucks. It's a small tank, so I would only use it in the field, or to top off after filling the gun first with my scuba tank.
My scuba tank requires a visual inspection every year, with a hydro every five years. I'm not certain if the standards are so high for tanks that are not used for "breathing air" (which most paintball shops do NOT have the expensive filtration system for). A paintball tank, using "unclean" air, may not require inspection as often due to it not being used for breathing (major health/safety issues when using "unclean/unfiltered" air vs. the air a scuba shop fills with...for your lungs, not for the gun!). Hope this is helpful, best of luck!