The choke and fast idle cam are linked, when the engine is cold, the choke is on and this rotates the fast idle cam on. Over time the fast idle cam slides down a stepper, if you will, until it kicks off altogether. Fast idle speed, curb idle speed are posted on the emission decal under the hood. Alternately, if the engine is already warm or nearly warm, you can 'kick off' the fast idle by punching the throttle hard.
Here be the answer to all your questions! I dug around underhood and found the factory 2.2 carb vacuum diagram. Here it is, cleaned up a little in photoshop. It shows which port the spark control computer attaches to, as well as which solenoid is which, along with emissions and EGR info. I also attached some pics of my vacuum setup.
The above one here goes in the passenger side of the carb casting, serves as a vacuum source for the throttle kicker solenoid.
Note that the EGR / Purge solenoid can be removed entirely and just cap off those lines at the carb and solenoid. As you can see the driver's side port at the front of the carb supplies vacuum to the EGR system and can be capped off.
The passenger side front port supplies vacuum to the spark control computer and air purge valve on the air pump which can be bypassed and go straight to the spark control computer.
The port right behind the choke housing is used as a vacuum source for the choke and should be used. As can be seen in the pictures, this line also 'T's into a line going to the air box and the heated air temp sensor, before going to the heated air flapper door. This part isn't a necessity, but it does help with fuel mileage and drive-ability.
Hope this helps and brings clarity to your setup!