I'd move the Data closer to the middle. It has passthru, so nothing's lost by doing that.
Put the active mult right after the Pam's workout, and the Plog after that. Makes for a powerful combination.
It could benefit having one or two Doepfer a-138n mixers to sub-mix things together.
I found the Victor to be kind of boring and limited in what it brings to the rack, and it's joystick is meh.
Put an Oxi Coral in there instead. It'll give you tonal colors that the system 55 doesn't have.

On the other hand, if you're going Behringer, you could get 3(!) B2600's for what that System 55 costs.
One in each color!!

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