SB:
And the best of luck to you with your early-edition R9! I hope it gives you the same flawless service which my No. 132 has given me.
I stocked up on the original recoil springs shortly after I acquired my R9 in 2004 (purchasing some from a former member here on the Forum). As a result, I still have a couple of unused original springs left in my safe. Since I rotate my magazines regularly, I'm still using the original magazine springs as well. If and when I go to the new recoil springs, I'll probably also want to replace the original magazine springs, since I've read reports on the Forum that the new sets work well together.
Again, good luck, and please give us a range report.