I think you're overlimiting yourself here. If the criteria for the build is that it needs to be powered and portable, I would recommend looking at a Tiptop Mantis. Very adequate power, great form factor (2 x 104), and you can even get a custom gigbag for it from Tiptop. Trying to do what you want in 1 x 84 hp is just going to be an exercise in frustration, if the modules you're thinking about are any clue.