Low vacuum - should I ditch my vacuum advance distributor?

I've kind of always understood vacuum as an economy thing. And when I hear leave horsepower on the table I'm not thinking of economy nor the cam you described.
Just recently I purchased a summit distributor that was plug and play with the electronic ignition in it for $325. It likely is the same thing as the Edelbrock one for $450. Anyways it gives like the MSD distributor I have in my duster the option to change the mechanical curve whether it be the springs or the amount of timing. Also it has a vacuum advance that's adjustable and can be taken off as well which I did because I don't usually build economy cars.
Also with theforementioned distributor it needs a particular coil that has less than .500 amps... So beware that that may be another $75 investment....
This is just what I did others may have a million different ways but I'm just throwing my hat in and my two cents for another way...