If it is an Edelbrock carb, the pcv should be hooked up to the large fitting on the base of the carb, same with the holley but on the corner I believe. So it sounds like its hooked up right.
Is the pcv valve clogged? Do your valve covers have baffles in them? I wouldnt think the pcv valve would cause oil to come out the breather. Usually if your pcv is clogged you will get a bit of smoke from the breather.
I'm sure someone will come along and give you a better explanation and answer. Sean