Don't bother with a dual valve setup, it's a waste of time and money. Get a BOV and either recirc it or vent it to atmosphere. So turbo, hotpipe, IC, cold pipe, BOV, MAF, TB. People a decade ago used to install a BOV along with the stock BPV to try to prevent the turkey sound but it has been proven to be redundant and ineffective. I run an HKS BOV and it works fine. For the vac line it would be best to get a vacuum block for the brake booster line and run dedicated lines for the BOV and WGA, or you can just run it like stock with new lines.