Oil catch can PCV valve

Hi,

I have a slight "issue" with oil vapor being pulled into the air intake; throttle body and throttle flap gets coated in oil and im not quite fond of cleaning it (and i found it really does help keeping it clean) so i dedecided to install an oil catch can.

Now the question is: should i leave the PCV valve in line with the catch can or remove it altogether?
I want it to be a closed loop system, so blanking it is not an option.
And could the PCV be replaced with an an line filter as to keep if from "vacuum leaking" by restricting the airflow?