I’m curious about adding an ME-1 rig to my system.

Let me see if I understand correctly. I add an M-ACE card to my iDR. I add an ME-U to my monitor rack, because I like the idea of a fully branded, road-ready solution. I add four ME-1s, one for each muso. I use armored CAT5e to jump from the iDR to the ME-U, and drops of armored CAT5e from the ME-U to each ME-1.

Question #1: Two of the musos are on ears, and their transmitters are in their stage racks. The stereo output on the ME-1 would drive their transmitters. But this is an unbalanced connection. Will I experience ground noise in this scenario?

Question #2: Two of the musos are on passive wedges with rack-mounted power amps. Although I could run a TRS cable from the ME-1 back to the power amp, it would be a lot easier if the ME-1 could mix down to an output on the iDR. Is this possible?

.