Yes, you really need it. Besides your emotional response to it, there's the whole list of major health issues you listed. FWIW, iodine bothered my sleep, and I found that the latest I could take it was midday. I never did a salt flush, but I regularly imbibed a lot of water and salt which kept the bromine flushing its way through my system. Drink a minimum of half your body weight in ounces of water per day, and preferably more, and include 1/4 teaspoon salt per quart of water.
If you can't tolerate 1 Iodoral, take a half. Take a break when you need to. Increase when you can. But to come out on the other side, you have to stay the course.