I gave it some thought and it's pretty obvious to me now.
I'll run the return from the Maze 4 to the Rad (bottom), and then from the Rad (top) to the pump inlet. The hose bends might be a little trickier, but I guess it'll be easier to bleed.
I'm gonna try to get this done during the week. The plan was to finish up the case mods and assemble over the weekend, but I've been too sick.

Not to mention I'm waiting for DD to send along another piece of all-thread I was shorted out of the Maze 4 package (couldn't find 2-56 locally), which should arrive today.
!: edited for clarity.
Thanks,
Tom