That's really nice work, Jeff. I'm envious.
I like it that you keep the hand sledge handy in the corner, there.
In a couple more weeks I'll be taking most of the gear out, rearrainging/removing/adding gear and then start the cable management again. Also removing the SMC (white enclosure with cabling) and installing the RG-6 splitters, amps and terminals in the rack on the back (garage)side.
Then time to close the walls back up and get the millwork installed.
Few more months and I should be close to done buying installing gear and have it mostly completed
It's been a journey ...... and a learning experience!
But worthwhile IMHO.