Thanks for the reply Blue Jay!
I'm beginning to have second thought about doing the temp move myself as I'm getting strong cautions against it being a DIY project, probably 8 to 1 against. I'm comfortable doing interior wiring but working with that amount of unfused amps is probably a bit too risky for the uninitiated.
Something I forgot to mention earlier is that while talking to the POCO yesterday and mentioning I might do it myself because of their "outrageous" price not a word was said to the effect that I could not (legally) nor should I not attempt it for safety concerns alone. Guess they figure it's idiots beware!
Anyhow, I called around this morning to some local electricians and so far the best price for temporarily moving the service drop and placing it back a day or two later is $175-$195 via phone estimate.