About blocking the bov. Some people say it does nothing to the turbo, some do. Both appear to have good arguments... however in my opinion if you're running standard boost or not going crazy I personally don't think you'll do a lot or any damage to the turbo. However that's based on very little...
A pod filter will just increase the induction noise, so whatever bov or setup you have, whatever sound it's going to make... you'll just hear it louder than the std airbox - I don't think the intercooler has any affect on that
A safe way? lol why do you want hektik flutters? Girls don't think you're cool, guys don't think you're cool. The only person who will think they're cool is you...
Fitting an atmo bov will just make your call stall, unless you have an aftermarket ECU or some shit
Others will jump in and probably give you a bit better info but that's all i know