I was just making a point about people questioning why the PN went for MILGEM instead of Chinese frigates. There were no decisive quality issues with the Chinese stuff - be it for the subs or frigates - but the decision to go with the Turks probably stemmed from maxing out the Chinese credit line.
Now as to why they picked 8 Hangors instead of 4 Hangors and 4 Tiger-class FFGs (or even 6 Hangors and 2 Tiger-class FFGs), that is a doctrine issue. They evidently wanted to build a sizable sub-surface fleet so that they have enough ships to spare for deep-sea operations. However, if the Chinese had another $1bn available in credit, I think they would have added 4 Tiger-class FFGs (or Type 054As or whatever).