If you simply want sync, you can get the MIDI expander for Pam's New Workout.
I use a kick on an audio channel to sync from DAW - much better timing as audio is much higher priority in computer OSs
O&C has other functions as well, so it'll be very handy.
but can only do 1 or 2 things at a time - if you need that many quantizer channels I'd look to the sinfonion - then you can do chords too!!!
Your rack has no LFOs, no dedicated envelope generators, no utility mixers, no basic utilities (like attenuverters, noise). You'll find the boring utilities are the glue that really holds your modular system together.
modular synthesizers that don't have utilities end up unloved in cupboards or for sale once the user gets bored of them
Also a small multi-effects unit can make a real difference. You may want to try an Expert Sleepers Disting EX if there's room. It's a Swiss Army Knife of functionality and will help you explore the possibilities of modular synths.
-- Ronin1973
Distings are great - also consider the happy nerding fx aid (xl) if you want a lot of variety
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities