I feel like I have this working really well. I made a few updates - mostly just to make a bit of room, so I don't have to do as much tap-dancing while playing/singing.
Chain is: Pitchblack > AUX OD+clean > hidden KLON buffer underneath > DD7 > RC1 (AUX tap/remote that controls both) > Sea Machine > Spring Chicken > DE7 (always-on, set like a warm, quite tape delay gurgling away between songs) > Freeze > Hummingbird
It does the thick, dark, noisy, cold and clangy, damp cellar thing really well, hahahaha