My brain's not 100% this evening Edgar so give me a moment to engage brain functions properly..lol.
You have the vc and primary separator hoses linked to one input , and then one output to the cold air intake.
You have a larger Turbo fitted so there will be a greater level of induction so a likely chance the increased vacuum is drawing in more oil saturated vapour than you would normally expect, as the catch tank can only retain so much .
The normal outflow from the primary separator will be fine but if you are pulling more in then it has to go somewhere.
With two sources going into one tank port it maybe too much , which is why I went with dual inputs.