I so sympathise I have had both general and spinal C's and I have suffered axiety/depression aswell(not at the same time though ) I would highly recomend the spinal/epi not just because of the physical aspects but because emotionally it's alot less stressful, being aware of what's going on stops some of those axieties because your awake you feel a bit more in control. Sounds so stupid but I struggled after my first C (general) with the thoughts of what happend while I was asleep! what if they switched babies, what if he was in danger while I was asleep and I wasn't able to hold him... etc. I had a spinal with my second and although I was very anxious and nervious I was also so excited which made it all seem alot less overwhelming.
Try not to worry too much and practice thinking positive about the whole thing. I know it's hard