OK, got the drift of your situation.
Yes, it's tough to get circuits through a lot of times....
That's part of the job.
Please don't take my comments as being "smart AxxED", but the nature of the beast that we earn our living from is not always a "cake walk"
We run into situations where you may have to go 500' to get a 120 circuit, with a 40' ceiling/roofdeck building..
I have not seen a disco like you described, have you searched the mfg websites? Called Cutler-Hammer area sales rep, or Square-D?