before you go completely eliminating everything do have to pass emissions? if no then pulse air can go. many also get rid of the EGR, my offenhauser manifold doesn't even have it. besides what you posted you need vacuum to the vac advance on the distributor.
Do everything with a positive attitude, it won't always work but you'll piss enough people off to make it worthwhile.
the voices aren't real but they sure have good ideas.