I can tell you the bulk inks work good, the smart thing to do is switch them all out at once so you can get the air out of the lines at one time. Shake white ink at night and it will be ready to go in the morning for printing. Shaking it right before you print will fill the lines with very small bubbles that migrate to large bubbles over time.
The bulk carts. have high and low lines to keep the ink levels at, but you can go below them if you need to keep printing a few jobs. If you have any questions I can get the answers from the guy who has it on his machine.