Hi Iaian,

I wanted to write because I noticed nobody answered you yet. I am not in the same medical boat as you are so I cannot pass on any experience, but this is the best advice i can give you:

Call up your local immigration hotline and ask to speak to an angent about the medical requirements, explain your situation and say that you wanted to get a clearer idea as to in which situation would you be excluded. Say you don't want to spend the money to apply, etc if you application is doomed, know what I mean?

Hopefully they can guide you from there. Good luck!