It's not a bad idea...as such, you don't have to have a complete voice in this, since it's just a "sidecar" for the Moogs. However, you're missing a KEY PART...an Erica MScale, which is a bidirectional I/O for the Moog CVs which can be somewhat different from standard Eurorack. Take the mult out (you should get some inline mults instead...this system is too small for dedicated panel mults) and put that in instead.