Well, I would possibly feel complete with half of that. But if you really have cash burning holes in your pocket, you might want to get a CV recorder/player (PH01,Quad CVRecorder), some sequencing logic (Gatestorm, René, Trigger Riot) , or some serious mixing/routing (Frames, VCA Matrix, ADDAC802). Not that you couldn't go just about anywhere you wanted, as it is ;-) Also, how do you control all this? Some wheels, joysticks, sliders, (Nunchuk?) etc. seem appropriate to put control in your hands.

I would get a powerful mixer first. You might want to control all those audio and CV streams with minimal effort from a central spot.