Erica Synths Link probably a better (well, cheaper and less HP) option than 3 X Outs. You could potentially also lose the A-138 in favour of a VCA that can serve as a mixer (MI Veils, ALM Tangle Quartet, Intellijel Quad VCA). While Pam’s and the Black Sequencer will provide a reasonable amount of modulation sources, Plaits and BIA both really shine with lots of modulation so an LFO (Ochd, Batumi) or small envelope or function generator (ALM Pip Slope, Joranalogue Contour 1) I reckon would really add to your enjoyment of those sound sources. If you’re bringing everything into a DAW you’ll get much better effects with VSTs than with the Dual FX so would benefit more from a small analogue filter (Bastl Ikarie, MI Ripples) shaping your sounds in a way that’s much harder to replicate in software.
As with everything, we all have different preferences so ultimately go with whatever sings to you :)