Congratulations, hope you like them. In all honesty though, unless you play a ball with some spin you aren't getting the full worth out of the irons. What really sets the R11 apart is the ability to stop the 3 and 4 irons quickly, you really can play target golf with them. With a no spin ball this just isn't going to happen. You're also going to have a pretty quick meter but if you always play the free ball you're probably used to his.
No need to go for Nikes though, the Srixon Z Star will make a big difference for 180 a sleeve. The Cally Hex Chrome at 250 will be even better but obviously at a greater price. I can't advise on the WGT distance, spin and so on balls as I've never used any of them.