Being neither innovative nor narrowminded puts you in a good position to still get the curia and missionaries but not have the tech malus. Take a couple religious NIs like Church Attendance and Unam Sanctam, and you should be getting the curia a lot.
My generic Catholic strategy usually involves Military Drill, followed by Church Attendance, followed by Unam Sanctam while being max centralization, neither innovative or narrowminded, and everything else varying. For TO-Prussia, I usually go max quality and max offensive, the latter being because I don't care much about the siege bonus from defensive.
The AI usually kills itself with minting and narrowminded, so if you go free subjects, you're looking at an even bigger tech gap that would pay off in the long-run.