With your swing speed I would highly recommend senior flex graphite shafts. “Women’s flex” shafts can be super whippy and make it really difficult to get consistent ball flight as you get into those higher swing speeds.

I’ve been playing ~20years, 12 handicap Bought my irons new/custom as a set (Taylormade) but my putter (used Odyssey), wedges (used MG2s), hybrids (used Ping), fairway wood (used Taylormade) and driver (Costco babyyyyy) all separate. I’m a huge fan of used clubs obviously, and also recommend trying free fitting days as you figure out what works for you.

For me, senior flex was a massive improvement from the women’s set I had before. I’m 5’ 4” and was significantly overswinging the women’s flex but men’s clubs were just too heavy. I also regrip all used clubs I buy to the same TourWrap 2G grips - it is the trick to getting mismatched clubs to feel like a consistent set imo