A pcv unit of some sort may help, but the damage is done and a new seal is needed. It may be just a bad oil seal.
One of the pain in the ass things of pulling the timing cover is having to reset all the timing gizmo's. Since you are doing that anyway, get in there and change the seal and check the timing chain. Don't forget a fresh oil pump sealing washer.
After all is said and done, make sure the contact breaker cover has the hole down. If it leaks after a fresh seal, go ahead and try a oneway valve on the breather.\
As far as oil and EI ignitions, I do not see a problem.