Welcome, Jason. The only very cold line is the one from the expansion valve to the evaporator, which I'd imagine is already insulated and very short. I guess you could insulate the return line from the evaporator to the compressor, but that one's probably lukewarm anyway.
I envy your A/C compressor, and there's no reason why it shouldn't run during auto stop. If it does shut off during auto stop, you should modify that behavior. By the way, where is the compressor mounted in that car?
You should also take measures to reduce your A/C use: a sun reflector in that expansive windshield of yours, breathable seats such as those from an Insight, a light colored paint job, and these:
http://ecomodder.com/forum/showthrea...ings-8725.html