I feel your anxiousness and concern regarding your upcoming appt.
It is good to be well-prepared for an important visit such as this.

Mark has given some excellent suggestions!
You mention that your SCS is causing you alot of pain. This is certainly a point of concern and you need answers. Have your list of Q's written down and be assertive in getting answers. I know alot of times the Dr's can tend to talk over our heads or rush us, so don't be timid about asking for clarity.
It's also good to have someone else with you for that second set of ears.

Regarding the depression/isolation you mention - this is very important, not to be ignored. Hopefully they will refer you to an excellent person whom you can talk to and get professional input.
I personally can relate to this, as I've battled it quite a bit, and I know many of us here understand as well. This is a great place to discuss these issues, as pain and depression go hand in hand. Please feel free to address this either here, or over at the depression forum, or if you'd rather be more private about it, please PM any of us. We're pretty open about it and we've done wonders for each other in lifting one another up.
We're all in this together and I'm ever so thankful to have this place to come to.

Please keep us updated on what your Dr has to say, especially about the pain from SCS....I'm concerned about this.

You've got my prayers, you can bet on that!

Rae