I see no immediate problem, but will say to WATCH advancing a stock distributor if that is what you have. All stock smog era distros have a very very long slow advance curve. This means that jacking up initial will result in OVER advancing at high RPM. Learn to check total mechanical advance, which should be (rule of thumb) 32--35. Back in the day with fuel and some combos we could run up near 40 BTC
For idle screws, "give it what it wants." Set timing FIRST, get the engine completely warm, and after "roughing in" idle mixture screws for max RPM / max vacuum, diddle the speed screw to get idle where you want for RPM. Then touch up the mixture for max RPM/ vacuum, and end up "on the lean side" just a touch, just that point where the vacuum/ RPM starts to barely decay
Also keep in mind that so far as vacuum, while you are fretting about nothing, that the gauge itself might not be all that accurate.
