For you elders, me included, try 95 gram shaft. It's much easier to swing than 125 gram dynamic gold.
I also insert vibration dampening foam into the shaft and it's done wonders for preventing tendinitis.
Always a bit leery about graphite shaft in irons as I question quality control of the shaft and the amount torque twist the shaft allows. Steel shaft with around 2 degrees of torque tolerance gives me more confidence than a set of cheap graphite iron shafts with published 4.5 degrees torque. And by the time you find a graphite iron shaft with low torque, it will get costly and the shaft will weigh as much as steel.
So, if you find a set or irons that gives you more distance due to stronger loft, did you really gain distance?
I feel that shaft fitting is just as or more important than looking for a new set of heads as finding the right shaft may help you find more distance. Just lowering the entire weight of the club by 20 to 25 grams with a lower flex point while maintaining the same swing weight (hopefully) will definitely allow you to swing the club easier and faster and gives you more height and distance on your irons.
$5.99 for a pack of these inserts at golf works.

TLDR: Get you some lighter iron shafts.