My 2 cents...In order of importance:
1. The "Quality" of the CFI
2. The "Quality" of the CFI
3. The "Quality" of the CFI, and...remember...The "Quality" of the CFI...
I learned more about being a pilot from a middle aged woman CFI who changed careers at 44 years old and decided to become a pilot...She had little time but she was of amazing caliber (she's an airline pilot today). Find a great CFI and learn...it doesn't matter when you actually fly from...