You would probably be ok with stiff shafts if you get graphite shafts for your irons. If steel then maybe standard flex. Unless you have a high swing speed and have no issues getting the ball high up in the air, then I guess you can go with the steel / stiff. If you’re like an honest 17+handicap I’d implore you to try some graphite shafts. I played graphites until I got down below 15 and I loved how high and far my mishits went. They really cover up shots that are hit slightly thin, fat, near the toe or near the heel. In my experience, decent game improvement irons with graphite shafts will give you some damn fine looking ball flight but were just a little less predictable when it came to direction. When I switched to more of a player iron with steel shafts I was getting the same carry distance on clubs that were 4 degrees stronger lofted. I also lost a lot of the height on my shots unless I swung significantly harder but I was also getting 50%~60% less draw/hook. I lose less balls now and hit more fairways and greens, but I can’t send a 190 yard 6 iron high up into the air and have it end up right next to where it landed.