Are you sold on getting a RackBrute case? It's nice to have one mounted above your MiniBrute. But if you went with something like the Mantis, you get 208HP rather than 171HP (you sacrifice 5HP for the power supply). If you have the cash, the 7U 108HP Intellijel case is also worthy of consideration as well... you get 208HP of regular space plus 104HP of 1U and a metal lid for your case that will allow you to leave things patched. If you're working live, this will save some considerable time setting up.
I noticed Luigi's build dumps the Noise Engineering stuff. How important are those modules to you?
Even if you get a Zadar, you'll want at least one traditional ADSR unit. Menu diving isn't a lot of fun. You might consider a Tip Top Z4000 as an alternative to the Doepfer. It's only one channel (make it two if you have the space). I believe it's stage of the ADSR can be manipulated by CV, so you can control the length of each stage via CV/sequencer. If you want to make sounds that evolve, you may want ADSRs with this ability.
There are no wrong ways to go about it... only varying levels of disappointment. Start in earnest as you're getting intimate with your modules and learning about their capabilities as well as YOUR capabilities.