Doepfer

Hi
I'm about to expand my Moogerfooger set-up, with some of Doepfer's modules.
I have the following Moogerfoogers: Ring Modulator, Analog Delay, Freq Box and
the 251 Control Processor.
The A-190, A-180, A-150, A-118, A-136, A-106 and the A-100G3 19" frame should
expand my set-up and enable me to control the modules (and Moogerfoogers)
via Max/Msp.
I'm not that familiar with analoge systems, so please guide me and tell me if
i'm missing something?
For instance can I control more than one midi channnel or do I need more than
one A-190?

Thanks
Simon