Hey, ssmile I planned to read 'n' run, as it were ie lurk, but seeing your dilemma I felt I had to reply...
I say this as someone who has never had a section, but I've watched LOTS of those birth programmes (such as OBEM, Bringing Home Baby, From Here to Maternity, Portland Babies, etc, etc), read many threads/forums and this is what I've gleened re: epi vs general when it comes to a section.
On the whole, an epi is preferable because you're able to start immediate skin to skin/attempt breastfeeding. Not to mention that you don't 'lose' the first however many hours you are in recovery for regaining consciousness. I've seen many women struggle with the fact that they weren't there for their babies. But I would also caveat that by saying obviously those women had an emcs and so struggling with 'ishoos' in general not having had the chance to come to terms with things and put plans in place that mean they've no need to feel The Guilt (or at least KNOW that they're doing the best they can, in the circumstance).
If your back problem is such that a general really is the best way forward then you CAN do that; know you're making the best choice all 'round for both you, baby and your immediate family. Even think about things like how you might react to the general (lots of women get sick (vomiting) and it doesn't seem anti-emetics are standard or else they wouldn't be throwing up so much! You could request them!) THink about who would be with the baby whilst you are in recovery - I think, for me, my over riding concern would be the baby was getting skin to skin - if not with me, then my partner. It helps them regulate their own body temp/breathing and, again for me, the idea of them laying in a cot unattended is a little bit heartbreaking. Really do make your peace about not 'being there' because it is what is best for you all even if it isn't 'the ideal'.
I'm no sure if I'm coming across the way I'm meaning to! Without being all lentil-weaver-hippy-dippy (I'm not one of them, honest!) I think it's possible you can still have a perfectly positive experience. In a way, we all need to think a little along these 'what if' lines, because it can happen to any of us - in a way, you're blessed to know which direction you're headed and make firm plans that will make you feel good 