Quad carb setup information help

Took the car out for a ride today. I will say that it doesn't seem anywhere near as rich as it did on the first start. I have the throttle plates totally closed on both carbs and idle screws backed out off stops. It idles at about 900 rpms in gear. Its a little low but doesn't load up at all and will sit and run forever that way.
I want to get the distributor out and check to see if it can be changed but I need to wait another 2 weeks before it can be done. I the meantime I plan on moving the timing up to see how it handles more advance.
My edelbrock synchronizing gage came so I will get that assembled to the top lid and see if I can play with that awhile even tho I will probably have to do it again once the distributor is changed.
During my ride today the I noticed a slight boog around 2500 -2800 rooms while driving. Again its very slight. I also plan on adding my bungs in my exhaust to see what ratio I have. How do I know where to put them to get the best readings? Should I put one on each side?
This is all new to me so I really appreciate the but help.
As for the distributor how did you come to the 6* distributor change and is that still the number you think is best?
Thanks Rod