Michael,
It certainly sounds like your condition is unfitting. If it is, I think you should get to 30% based on what you have written. However, it is always possible they rate you less.
You may have some issue with getting more than one psychiatric diagnosis rated because of "pyramiding."
More important than your career field is the impact your condition has on your ability to perform your duties. Very important is the type of limitations you have, if they are current or lessened because of treatment, and what your command and doctors recommend.
As far as the meds, I can't give you any insight into the medical part of that question. But from a legal point of view, it may indicate to the board that you are not "stabilized" and thus a good candidate for TDRL (which is a very common outcome with mental disorders).
I hope this was helpful and I wish you the best of luck through this process.