This is only my opinion but hope it helps...
PCV - don't bother with a delete, just replace with a OEM latest revision if it's failing. Even the VW Cup cars use the stock PCV system. If you do want to remove it, get a catch can system instead.
DV - Again, a revision G or D (which do differ slightly) will be a better option, of a GFB DV+ upgrade (Google it). Far cheaper and perfect for you level of tune.
Intake - Again, for a GTI with K03 turbo (like yours and mine), you'll be better off keeping the Carbonio feed and panel filter, if you use a full cold air induction kit you'll loose a fair bit of torque in the lower rev range but gain in the higher. I run the same intake as you and it's fine, I'm only considering a full kit for when I go all out.
Hope this helps...