Your reasons for wanting an ELCS are actually fairly typical for a potential first time mother who wants an ELCS.
A couple of point here though, as previous posters have said, you should do your research. As VertdeTerre points out, you will need a catheter (and for it to be removed). A suppository is negotiable as alternatives are available. You will be touched in theatre, the only difference is you won't be fully aware of it (you do have some sensation). You are likely to be in hospital for two nights at least with an ELCS too.
I don't believe that an ELCS is right for everyone, as a result. An ELCS is really being pushed as a way to deal with certain anxieties but it is not the only solution. Counselling of some form in particular may be a way forward, especially given the fact that you aren't pregnant so have time to get more benefit from it.
Its clear you have a good idea of what your fears are. Exploring how you can deal with them is important. You may be set on an ELCS but I would say to break down your fears bit by bit and be realistic about how much an ELCS can help those anxieties. Think about what other forms of support you may need; do you need extra support after the birth? would you benefit from your husband being able to stay in hospital with you?
Some times they can have consequences for your life with a baby and you need to tackle the heart of the issue. If you suffer from severe white coats syndrome then this is going to be massively important as which ever way you give birth. You will need ongoing medical contact, throughout your pregnancy and after the baby's birth, not just for the birth. For example how are you going to cope when your baby needs vaccinations?
As you aren't already pregnant you do have time to deal with some of your issues in your own time scale and I'd encourage you do to this. It can be difficult to get the support you need, especially given that the people who can help you are the very thing you are afraid of. But actually having contact with HCP and building a level of trust with them is in some ways as important as the way you indeed to give birth, in terms of feeling in control. A good relationship with your care givers is empowering in its own right. For this reason, someone in your position, probably would benefit from extra antenatal appointments.
I would research your local hospitals and see what their attitudes to peri-natal mental health and ELCS in general are. Some hospitals are a lot more progressive than others. Many do not have a peri-natal mental health team, and this is what you need as they will be trained and be aware of your needs better than somewhere that does not have this facilities.
Be aware that the onus is on you to find help and make your case, as unfortunately there is a lack of understanding and awareness in some quarters about the entire subject. You may come up against some hostile or negative responses, but if this is what you really think is most appropriate for you, there are places and individuals out there that can help. Its just a question of finding them.