A big stroke engine will have a lot of windage at high RPM, no doubt about that. But you're building a street engine so 98% of the time you won't have any issue. When you take it to the track you'll just have to make sure that you have a couple of really good breathers in the valve covers. For street use you should be fine with a PCV on one side and a good breather on the other side.

My point is that if it is a street engine then don't spend a bunch of time and money trying to fix the 2% problem. You need a big pan to control the windage and/or a vacuum pump but neither of those are good solutions for a street car so you're just kind of stuck.

The Milodon road race pan is probably the best compromise. It has a fair amount of internal volume but it doesn't hang down very low. If you buy some good valve covers which have proper baffling for a PCV as well as a place to mount some high volume breathers then you should be okay. I don't know if such an animal exists or not but you can get sheet metal valve covers and then weld #12 AN bungs on them for screw in breathers or use AN lines over to the core support for a Moroso 3 qt remote breather tank.