You need either 2 6U racks or a 6 and 4.
6-space:
Conditioner
Wireless
Maximizer
Power amp
(5 spaces)
4-space:
MP-1
G-system
2U pedal shelf
(4 spaces)
You might want the 4-space vented for the MP-1, unless you find one that has a decent gap between the top of the rails and the case.
Use color-coded cables, and color-coded labels, and label the ends of the plugs for those dark stages. Clip an LED work light into the case that runs on batteries, with batteries for it. Or one of those hand-crank flashlights that never need batteries.
Leave the MP-1 rack plugged in all the time.
If you do expand in the future, get another 6-space to replace the 4-space, move one item from the 4-space to the other 6-space since it has one open slot.
I have an 8-space which houses preamps and FX units (2x MP-1s, Digitech TSR-12, GSP1101, 2x GSP-21s, and an IPS-33B) and a 4-space that holds the "studio" stuff (Line Mixer, Switchblade, Alesis 3630, and Digitech TSR-24). While this is largely a home studio setup, I can move one MP-1, the TSR-12 for EQ and effects, the IPS-33B, and the 3630 into another 4-space and run into a PA or power amp or the return of a head if I need to. Then there's the 4-space rackbag which has 3 more 3630s and an Alesis QSR, but that's mostly because I don't have room to set them back up yet. Still, it's easier to carry a rackbag on my shoulder, combo in one hand, and guitar case in the other. I make one trip in and one trip out. I do need to convert the bag to a backpack, though.