If bank pressure would be under 3000 psi anyway I hardly see the point in banking. As I mentioned earlier, it is better for the compressor to run it one time for 10 hours than 10 times for 10 minutes each. I'd double check the pressure on the bank bottles, 200bar sounds like they might be O2 storage bottles, all the air storage bottles I've ever seen are 4500 psi /300 bar.
Cascade storage cylinders are available in lots of different pressures and volumes. My own bank has some 2400's, some 3600's, and some 4500's.