Irons - Switch to graphite shafts

Prior to my accident in 2014 I was playing Mizuno MP64 with light Nippon steel shafts. I had to completely review how I was going to try to play golf again. I ended up going to graphite shafts, tried them in a similar R flex, but, on advice from my physios, I decided to get as much help as possible, so, tried the Senior flex. What a difference. I was playing an out and out GI club, and coupled with a soft flex shaft found I could hit a reasonable shot.

Recently changed to a set of Mizuno JPX 900 hot metal with senior flex graphite shafts. A better quality shaft this time and it really suits me. I will never hit a long iron as I did before, but, I know I'm getting everything out of the club's with the best shaft for my swing speed. Check out grip sizing as well, a mid size grip helps reduce tension in the forearms and adds a little to the swing speed.

Any little help is welcome as far as i'm concerned.