Welcome to the board! I went to a Good Form running class at my local running store not too long ago and the instructor mentioned that minimalist shoes would help to correct heel striking because you'd actually be able to feel your foot hitting the pavement. From what you said, your PF was probably caused by not replacing your shoes often enough - not heel striking - so I think you'd be okay with a mimimal shoe. If I were you, I'd break them in slowly. I believe the recommendation I heard was no more than 1 mile the first time you wear them. And
HI! Welcome to the board!
Yes, I would certainly do this before my current shoes are dead so that I could ease into the new shoe gradually.