The one problem with rack mounting the Mooger Foogers is maintaining access to the I/O panel once they’re mounted.
Even with the open rack, you might have to get a bit creative with some longer bolts and nuts when attaching the mounts to the rack, and “angle” the top of the mount out a bit.
No big deal, especially if the rack is going to remain stationary most of the time.
Good luck with your new gear setup - post pictures!!