I decided to change out the HomeLab rack and concentrate on four sub-systems: (1) Experiment Pod; (2) Proxmox; (3) Edgerouter-12/M4100-26g; and (4) Monitor sub-system. Each one of these sub-systems can now be independently booted up and used.
I added a GS108Tv3 managed switch to the top of the rack so that I could change out the cables going from the HomeLab rack to only need one connection to the external GS108Tv2 switch behind the rack. This frees up some of the ports on that switch to be used for experiments on the table. The ExPod is now behind an Edgerouter-X connected to that top switch, with all components able to be turned off at the same time from a single switch on the power switch panel. The Proxmox server is also connected to that top switch for all of its external ports and is powered through a single switch on the power switch panel. The Edgerouter-12/M4100-26g combination is powered down from a single switch on the same power switch panel; external connections go through the top switch. The monitor sub-system is also turned on and off through a single switch on the power switch panel and is behind an Edgerouter-X connected to the top switch.
I also added an RGB led lighting on the sides of the HomeLab rack.
Issue: the vlans for server admin and servers still require the Edgerouter-12 to be running since the DHCP servers are on that device. This will need to be dealt with int the future.