First, it takes about 45 seconds to a minute before tapping the pedal gets it to drop off the high idle cam notch.

Second, once it is fully warmed up and idling at around 650 (and sounding like it's ready to die as L-82's always do) if I place my hand over the open choke plate it will rev up another 300 to 400 rpm. I assume this indicates that it is running lean and thus I need to open up the idle mixture screws. But I would like some confirmation first. Thoughts?

But the fact is even from the factory it sounded like it wanted to die at idle even when warm (yes I bought it new). It didn't die, but always sounded close even at around 650 RPM. When cold and in gear if it was stopped with the brake on I always had to keep one foot on the brake and the other on the gas to keep it from stalling. If you turned the curb idle up to run cold then it roared at idle when warm. The late 70's and early 80's Q-jets had the idle mixture screw access holes plugged so you couldn't adjust the idle mixture. They were intentionally very lean both in setting and the size of the idle flow ports to help meet emission standards. 

But I'll take look at the manual, ignoring all the set this at 19.21 degrees and that at 0.002" height etc. and just work the adjustments. 

Anyway, once warmed up so that the choke and high idle factors are all taken out of play, that leaves only curb idle and idle mixture adjustments. So I think I'll just focus on those for now. Then I'll worry about the start up circuits in the amazing air-fuel mixture control mechanical/fluid/electrically driven analog computer also known as the Quadrajet. It really is an amazing device. 

I should preface all these questions with one caveat. My objective on this engine, which is the original L82 engine in the car with 90,000 miles, is to simply get it running acceptably to drive it places to get it to an inspection station first (been 13 years) and then some other shops to swap our the transmission for a 700/R4 and get the rear gears changed over to 3.33 or 3.55. After that and when the bank account moves back up the engine will be replaced with 383 stroker and I'll then at a very slow pace to a rebuild on the L82 myself. So mainly with my current engine work I just want to make sure I don't damage it between now and swapping it out.