I am not sure what your question or questions are? Nobody can diagnose you here as we are not medical staff. Most of us diagnose our selves and basically if you start this diet and you get die-off, then your symptoms improve you will know if you are on the right track or not.
As to being a picky eater, I really don’t have much tolerance for that as I will eat whatever I need to. Nobody can solve that problem but you. If you can afford to be picky eater, go for it. If not, then it’s time for some changes IMO.
Write your specific questions and I am sure someone will answer.