I guess my main concern is getting the true ending though I always been one who would try to seek out everything that is possible in the first run, to have both me and the avatar to be one in knowing we went through the fullest experience before we depart when the journey ends (I never manage to get all collectables in my first runs despite always looking at every nook and cranny).
Because, for me (and unless it's something unique like Nier), the 2nd play through is like reliving memories of what you can only experience once (and with the magic of video games, fudging them to your content).
That being said, I suppose, in the end, if I can't do everything possible in one go, then I prioritize anything that effects or helps the narrative rather large or small...I hope not capturing all the Personas does that.
...*looks at the 40 hours mark* I'm still early?
For the record, over all, I've been successful in not stressing out though I did regret not reaching Knowledge 3 before May exams but apparently I was graded slightly above average so I'll take it.