I'm going to address some of the arguments that you make here.
First, the argument seems very unfocused. By this, I mean that you mention your health issues and your FMLA paperwork, neither of which have to do with race or age discrimination. It makes the entire argument very confused. I would not raise these issues unless you also plan on specifically making disability discrimination allegations or FMLA discrimination allegations.
Ultimately, it is just backstory that will confuse the reader, as they lock in on the fact and think "ok....so is this a discrimination argument too?"
Additionally, many of the complaints that you make about this transition that the company was making aren't related to race or age discrimination either. The fact that they were having you send in a lot of reports and justify documents, while certainly annoying, isn't illegal or indicative of discrimination.
The issue of your having to sign a blank employment agreement isn't really an argument for age or race discrimination either. It's generally not illegal either, unless there was an effort to defraud the government, so I don't see how this helps you.
Your strongest arguments here related to the disgruntled report against you not being properly investigated, suggesting a rush to judgment in this situation. Add that with the fact that they didn't follow their disciplinary policy, the witnesses against you were all white males, and they were more lenient to others (presumably white males), and you have a much stronger argument.
This really should only be about 3 pages then.