Bluenose, i had exactly the same issues as you have, i solved it by using the GI-SD ball ( which you have) it slows the meter down just enough to use the G10 irons and faster drivers. I was like you i loved the Rapture irons but the back spin sucks, i can't tell you how many times i've hit a good shot, only to see it roll 10 ft passed the hole.
About 10 days ago i decided to use the G10s and the GI-SD balls, now i'm watching my balls land stiff to the flag and that got me wondering why i didn't make that move months ago. if you give your self a week you'll never go back to the raptures i'm sure.