Terri:
On our IP35-165, 1994 model, the factory installed 1 30 amp plug and breaker on the port side outside of the cockpit combing forward end of cockpit. That is because the below decks electrical panel is right there just forward a bit on this port side. Then when we added AC, our installer simply placed the second plug and breaker right next this this one and ran the power down to the AC unit. That new 30 amp is only for the AC line.
This looks funny as I have 4 covers there. Two plugs and two breakers on/off.
This has worked well.
So, I would look were you AC unit will be mounted below, then look for the closest place to install the wiring. The sail locker is always easy to access and run wires, maybe there.
I also like George's info, maybe you have a spare factory set pre-run. We did not.
Hayden