My midwife at my antenatal appointment was talking about this the other day - she told me that often with second and subsequent babies the head doesn't tend to go right down until the very last minute - for many women, it won't happen until they are actually in labour.

Your body sounds like it is definitely ready for the birth I don't really have any advice on how to prepare for a c/s, but I agree that relaxation and mentally "letting go" will help. I am trying to work on that myself atm! Also, think about the kind of experience you would like if you do have a c/s - what would help make it a more positive thing for you? Forming a birth plan might help get your thoughts together and feel more in control of what happens.