Doepfer

dear, 
i'm thinking about changing my modular suitcase: 
2 mfos vco's, 2 cgs adsr's, cgs mixers, cgs vca's 
would go out for 
2 doepfer diy synths 
this would have some nice extra's and eliminate a lot of wires and different shaped pcb's inside. and make of course more space for cgs asr, resonators and some others. 

is this a good idea in general? 
and specific, how can i make a sine on the doepfer diy? 
-from a vco? 
-from the resonating filter? would this ever be 1v/oct? 

all help & suggestions welcome! 
thanks, floris
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