Okay, so this is a great answer for your friends and your employer. But to prove it to the FAA, you need random third-party testing. Two years of randomly getting phone calls and having to go in and pee in a cup.
And you came here for advice. And we should try to help.
I've seen flat fee FAA...
Okay, first off, everyone needs to stop beating this guy up.
Hiring an FAA lawyer who does medicals might not be such a bad investment. Many of them charge a flat fee that's typically four (not five) figures.
The AMEs will tell you this isn't necessary, but it's not their medical certificate...