The one they have on the site ask for SN# MODEL, for each drone you have. When i did mine (a few years ago) They only wanted your name it didn't matter what kind of drone you had you put the same FAA numbers on all of them.
Thought so. Went to the FAA site, and saw that I had opened an account and it showed that I had resisted before and paid $5, No mention of the new registration requirements. Says I'm good until 2020.