I'm no expert by any means...but I've been reading up on BTAs because my goal is to own a couple in my new 32gal biocube. First and foremost, I'd go back to my LFS and cuss the guy that sold you the anemone without ensuring you were ready to take it on. He's ignorant and doesn't know how to do his job or just doesn't care.
Second, I think you've bit off more than you can chew at this time...you need to be testing for more than just the basic Ammonia, nitrites, nitrates, salinity, and PH in order to own anemone. While those parameters are imperative, they are only part of what you need to understand.
I'd call the LFS and ask if you can bring it back because the "sales person" misled you to believe you could own this animal. You need to have a well established tank (minimum of 5 to 6 months) in order to have a good shot at it.
Good luck.