EDgun EDGun easy fill with cascading 4 scuba tanks ?

I just placed an order for a EDGun Easy fill. I have been cascading using 4 scuba tanks. I am curious if I will be able to continue use the cascade method with the easy fill or if I will only be able to use one tank at a time ? Maybe open 4 tanks at the same time? I know, I could have investigated this before I made the purchase.
Huben GK1 pistol.
FX M3
Thanks,
John