Looking well laid out and ready to run! Make sure you keep room for the cabling. One of the things i've been considering is, take a deep breath, hard-wiring the VGA connection between the m10000 and the xenarc controller board. It would involve tracing and soldering 15 wires directly to both PCBS and also hard wiring the LCD touchscreen controller to a USB header. This would clean up the 4' or so of VGA cable that is just in a coil on the side of the unit. All I need is about 5" of each wire to do this. I'm sure if solder connections were good the display would be even cleaner, crisper and brighter due to near 0% signal loss in the cabling. Would be risky as one wire in the wrong spot would mean possibly frying both the mobo and the xenarc. But on the plus side this would make for an insanely clean setup and OEM / aftermarket radio style internals.
Here is a quick sketch to help visualize what I want to accomplish.