When I reached L59 I stuck with the same R11 irons you have because I felt like I had finally dialed them in and liked how they were less influenced by wind because of the lower flight. That was a mistake, especially once I was pushed out another set of tees and had to hit longer approaches. I finally caved and spent the money on the G25 and couldn't be happier. On averages my approaches are much closer to the pin (putting still holding me back). There will be a learning curve as they are affected by the wind more than the R11 and they are less forgiving. It was easier to off ding my R11 into the wind to help hold the line and not lose much distance, when I started doing that with the G25s I started to come up well short.
Looking at you stats your 3 putt % is too high, are you still 3 putting a lot or do you think you stats are still high from earlier struggles.
I also agree with SP in that your scrambling needs work. Learn the flop as that's a good way to save par when you have a lot of slope between you and the ball but when the conditions are right you need be able to use the chip,
One good thing with the G25s is you will hold more greens and if you do run through a green better chance of being on the fringe than the deeper rough all which should help with scoring.
All that said you are doing well, better than I did, at the lower levels, earning $.