First time out

yes, you are over carbed - I doubt you will have enough vacuum to open the secondaries. A 750 would work way better. 34-36* should be good - all in by 2500rpm. Too much gear too IMHO.
Try 77 /85s to keep 8 size difference to compensate for the power valve in the primary side.
Pretty mild combo. 360 around 10 to 1 compression. 587 heads with stock valves, mopar 292/509 cam. Weiand Stealth intake, 850 speed demon. Probably overcarbed but its what I had. 4-speed, 8 3/4 with 4.88 gear. I need to do a little more tuning play with the timing and jets. I could use some help with that. Where should my total timing be at I was figuring around 36. I'm running 82 and 85 as far as jetting goes. I think I am also limited with that intake. Any help that could improve my peformance would be helpfull. Thanks Rick