Yes, looks like the plenum and TB needs to be stock for PCA GTB1. Wings are liberal - the ITC wing is allowed. Also PDK needs to be 100 lbs heavier at 3050, so it sounds like you're there.You are right about the stock TB in GTB1. My plan is to swap back and fourth (its a ten minute change) as its needed.
The wings are fairly liberal in PCA and very liberal in NASA. I hear you on the number of NASA events vs PCA.....same story by me in the North East.