I’d skip Pat’s and Geno’s if I were you.
https://www.tastingtable.com/389069/ranking-the-best-philly-cheesesteaks-from-worst-to-first/
https://www.phillymag.com/foobooz/best-cheesesteaks-philadelphia/
What else do you like? Beer? Monks is probably one of the best beer bars in the country (been a James Beard finalist like 5 times or something). Museums? The Barnes is certainly worth it if you’re interested in Impressionism. The Philly Art Museum is pay what you want (free) Friday evenings and the first Sunday of every month.
I’ll be in shorts and t-shirts next week, but some Floridians I know are in sweaters when it hits 60, so it’s on you to decide that.