Depends partly on what music you're doing and whether you need to work fast (as in live gigging) or not (studio work). If the former, you might benefit from some single-module voices. But if the rig is only going to see studio work, I'd suggest going with the individual module plan. Also, if doing music with complex sonic elements, individual modules give you the flexibility needed for that...such as for immersive ambient. But if you're aiming for a techno/EDM-type direction, it wouldn't be a bad thing to make your "bleep" and "bass" voices be single module voices.

-- Lugia

Thank you for your advice!
I still have a lot to learn so it is better to go for some basic modules for the learning path. I will do more research and if I like any synth voice module I will add it on the second row later.
Please check my set up again! Do you think it is a good starting point? Does the addition of attenuverter, filter, VCA, and Maths make it usable?
I need some honest advices to help build up my first row from those Doepfer modules.
Thank you so much!