Yep block it off. It will vent through the catch can.
The only issue i had when i did this, mine was an atmo venting mind you, was that after a while the car started blowing smoke at low rpm. Taking off from lights.. coming to a stop.
I emailed a few SAU people, and Rob from RIPS,seemed as if there wasnt enough breathing with the PCV blocked. Put it back to normal and the smoking stopped instantly and hasnt come back Possibly with the intake sucking away at it it may have been ok.
Something to consider. I dont know if anyone else has had the issues.
Mine
Dont let the Stock plumb back line fool you Its blocked with a bung, but stealthly for stock looking piping. Haha