I just wanted to mention that if your wife is GBS positive, that there have been studies that having her membranes stripped may cause an increased risk of transmitting it to your baby. I had mine done, and I was GBS positive and I found out that it could cause problems for the baby only after the doc had done it. I was upset that my doc hadn't informed me, but he said he didn't believe that it actually caused an increased risk of transmitting.
By the way, it didn't work for me either. Caused me to lose my mucus plug, and have a little cramping, but that was it. I had a very successful induction about a week later, but I don't know if having the membranes stripped actually helped with that.
Also something to think about...
Even if your wife did not test GBS positive, she still might be positive at delivery, or the time her membranes are stripped.
Knowing what I know now, I probably would not do it again.
Good luck and congratulations!