Hi Loony, don't worry! I was similar to you, dreadful first labour, baby in posterior position, forceps, stitches, PND etc. I asked for a CS for my second baby, and the consultant agreed. It was a while ago now, eleven years, but it was a wonderful experience. The worst bit was walking into the theatre. I started shaking, nerves probably.
The epidural was fine, a bit uncomfortable, like an injection, but definitely not painful, and the feeling was only for a few seconds. They put the catheter in after that, so I didn't feel a thing. My anaethsthatist (sp?) was great, he chatted away about his children, which took my mind off what was happening! Whatever people say, it did not feel like someone was washing up inside me, it felt like something heavy was on my stomach, strange feeling, but not painful at all.
I bonded with this baby as soon as I saw her, and had no PND at all. I think I had morphine, and felt wonderful! When I stood up the next day, I felt a bit wobbly and weak, but ok. I can honestly say it was a good experience, far better than my dreadful first birth, so please don't worry. But, you will have to tackle your OCD and let others do the washing etc for a week or two!