Better idea, I think: first yank the Kinks and Links and put them in the main cab. This opens 8 hp in the control skiff, into which I would suggest this: https://www.modulargrid.net/e/expert-sleepers-fh-2-factotum, probably placing it at the left end of the skiff to keep the cables out of the way...but to also allow the controls in the skiff to manipulate any of the CV, etc coming off of the FH-2. You could also pull the current MIDI interface in the larger cab in deference to the FH-2, plus you could easily drop the skiff in behind a small MIDI controller (Keystep, perhaps? the FH-2 is USB Host-compliant) and still get excellent ergonomics.
It also supplies some functions a basic MIDI interface doesn't do...check the listing for it. Alternately, one of Expert Sleepers' ES-8 USB interfaces (direct USB to/from CV/gate/trig) would work nicely here, PLUS you can use two "return" channels on it to track the modular directly with your DAW, since the ES-8 is a soundcard-type interface and can easily have two audio channels going back to the DAW while the DAW is busy controlling the synth parameters.