Welcome!
I'm sorry for the reason which brings you, but we're always grateful to have this place to share and not feel like we're alone in this.

This pain you describe - pins and needles - does it also feel like a burning pain? Have any of your docs mentioned any type of neuropathy (nerve pain)?
If so, then the chances of the SCS working for you would be pretty high.

Like the others have said, if you have confidence in your doctor, then shoot, go for the trial. I just wish you had a more clear diagnosis.
Stick around! You'll get great input here and you will gain an accurate understanding of what is involved. There's a diverse group of testimonies here, so you'll hear the good, the bad, and the ugly.
I too am tickled pink with my SCS. It does great in covering my horrendous burning peripheral neuropathy in both legs and lower back. It's a very soothing sensation.

Glad you're here!

Rae