The one thing that will improve your quality of life is having a healthy digestive system. At your meeting with your medical advisers, ask them what you can do to improve your digestion. I believe that topic comes up a lot on CureZone, so you should find information here as well.
Once you get your digestive system working properly, you can then move on to explore chelation and the other things you are considering.
Often people spend too much time concentrating on ways to kill things off and not enough time rebuilding the body. Perhaps it is time to focus on rebuilding the body and leave the killing for later.