Go and have a look at the empty Moog 60 hp cabs and at stacking those in a triple configuration with the Mother32 at the bottom. This gives you 2 x 60 hp to play with for pretty cheap and by adding some small, interconnectible power modules (Koma's Strom series comes immediately to mind) you still wind up with 112 hp for synth modules. Ample power, more space, pretty cheap, and great ergonomics.
See my configuration in the DAMN YOU, ARTURIA! thread under Racks...this uses a triple-tier 60 hp Moog setup in the middle section in which I've specced a DFAM and a full-on performance mixer setup for the larger rig as a whole, which is actually based around major expansion of two of the new Arturia Minibrute 2 synths. You might get a few ideas out of that, especially given that sequencing (via a Minibrute 2S) is a major feature there. But thus far, you're on the right track in general (save that the Braids would have to be a third-party open-source build since Mutable discontinued their version some time back).