as blueshoes says, sounds like you have made your mind up.
i have to say, and stats vary from hospital trust to hospital trust, that tearing so badly you are left incontinent is rare.
also, why would your baby's collarbones be broken? that again, is incredibly rare when baby gets badly stuck.
'And please note i do understand the risks of c section and i know you will be in considerable pain and discomfort, baby might have difficulties to breathe,you wont have feelings of achievement (this i have a problem with... i dont understand it when ppl say that cs is cold and clinical and you wont instantly love your baby? what? of course i will love him/her regardless the way i give birth. i really dont understand it)
from my own personal experience, i found a c.section to be all of those things and i found it very hard to bond with my baby, and felt i had not given birth, but he had been removed from me. it was hard. and as you have not had a baby before, you don;t know that you won;t feel like that.
mine was an emergency c.s, but nevertheless, teh op is the same.
don;t underestimate the positives of vaginal birth, you haven;t mentioned anything about that, except for all the risks, and they are rare risks at that.
there are a myriad of things you can do to make vaginal birth a positive and more controlled experience, but i have to tell you, and your post seems to be really focused on bieng in full control, and knowing what will happen, that your expectations might not be met by a c.s.
have you discussed these fears with a MW or obs where you plan to give birth?
i hope that you have a wonderful , enriching, problem free birth experience, that leaves you feeling joyful and fulfilled, whatever you choose.
i suppose, having had one c.s and one v.b, for me , there is no comparison.