I'm mostly wondering whether the layout works well enough (tried to order it left to right going clock sources --> sequencing/utilities --> voices --> effects --> mix out), and if I have a good enough mix of sound sources, effects and utilities.
-- finkaven

I try to organize by function.
1. Oscillators
2. Filters
3. Modulation/VCAs
4. Effects
5. Sequencing
6. Mixing

At the top of the case or cases I'll have my oscillators and filters.
At the bottom of the case, and closest to my hands, I'll have sequencing and mixing. Basically everything that I will want to get at quickly and tweak. Your bottom row will be busy, but you won't have to patch OVER the top of those modules. That's something to keep in mind as cabling can get really gnarly in a complicated patch. Which brings us to patch cables. Short cables can be good... but extra long cables and a few Velcro ties can make management a LOT easier.