Probably too far to travel. I live on Treasure Island on the Gulf. About 30 miles west of Tampa. I have almost always figured out idle problems, although it can be an iterative process.
Do these few things for fun.
Unplug the computer. Tell us what the idle speed is then.
Same for the o2 sensor.
Are you able to feel the idle speed motor work to try to adjust the idle?
Can you hear the frequency valve buzzing?
What position are the brass screws in?
There are often paint marks on the curb idle screw. Can you put it back where it was from the factory?
Is your mixture control screw available? Let me know and then we can proceed.
It goes without saying, check every vac line that you can. There are some that are not accessible, but check them all. Look ate the vacuum canister. I once saw a crack in that which gave crazy idle problems.
Open and clean the control pressure regulator screen and reassemble.
Is the brass tube ("of agony") termed the Auxiliary Air Pipe in position and is the O ring OK? There is another O ring that is used on a tube from the cold start valve to the air intake. Is it OK?
What about any details of the cars history? Gunk in the gas tank (I had the worse one in history, 3/4 full of thick goo)?