The problem I have always had with the "intern" route is that I spend too much time with QC before and during the job, and then looking for oddities during the testing. There is an institutional aversion to anything not "in-house", but you should seriously check prices for 3rd party wiring assemblies. Even if they do one side of something and you do the other on-site. There are "economies of scale" that actually make it cheaper AND quicker. I am not an institution, so I have to make the choice to wire a stage box or walk on the beach. To cost my time to make it properly would kill the job, so I farm it out, go for the walk, and charge T&M to install and test it. Sometimes the time factor decides- do I want to make 36 dsub assemblies in 14 days? Even when I buy materials in bulk I cannot match the quality at the price, especially when I expense the "opportunity cost" of carrying inventory.
I currently have a studio improvement job in "fab" for me with all sorts of assemblies including hundreds of tinned "normal" wires. Some guy wired the patchbays in a private studio and did not normal monitors, reverbs, externals, etc. But he DID take the time to shrink over every wire soldered to the bay! I can hunt (BEG!) for the next gig somewhere while someone else is making things exactly to my spec. The wiring gets done over two weeks and I can install it over a couple of days. I love the zen of mass production wiring, but a walk in the woods is pleasing to my family.
I use Redco for their high quality and great prices, which is not much help to you, but give them a call because they must know of a competitor closer to the Pacific- ProCo perhaps. There have to be fab companies near you that are competitive. At least to try costing a job or two- you will be surprised.
Mike