Big welcome to the forum! Mark and Rae are right, write down all your questions and make them answer them all! It's so easy when you are sat in a doctors office listening to what they are saying to 1. Forget what that they have said (I always take someone with me now - 2 brains to take in info is better than one, especially when you are in pain and going through it yourself) and 2. It's SOOOO easy to forget what you wanted to ask them, and it's very difficult to try and get those answers without another appointment.
I'm quite new to the SCS, although I have had CRPS and been in pain for twenty years now.
I had my permanent operation done a couple of weeks ago, and had the laminectomy done. I agree with Rae, if it helps access and may avoid a premature operation to re position the leads it's worth it.
At the moment I'm not getting fantastic coverage down my left leg and foot where my problem is, however they did explain to me that this is often the case after surgery, once the surgery swelling has gone down then it will be easier to program you. I'm waiting for an appointment to go back and be re programmed!

Any questions just ask, as I said I'm new to this but the others are really helpful and have had SCS's for longer. Hope you work out what's best for you