Babyface/control surface/Cubase 7.5 interface

I’m trying to figure out how to use the RME Babyface audio interface with my Alesis Master Control Interface into Cubase 7.5. What I’m looking for is how to map the connectivity between all of these devices and the DAW. The Babyface doesn’t seem to have enough inputs to accommodate my gear so I would like some use of the Alesis hardware inputs with some of the Babyface’s both as a direct monitor and into the Cubase DAW. Am I making sense to you folks? I’m looking at this melange of wires and I’m getting more frightened that I’m wrestling with the Lion. Any help? A map, a reference? Anything? I know RTFM, but the manuals (4) don’t seem to be interested in my particular problem.