Macperry: Happy new year to you too! You did what you had to for the nem and your tank! My feeling is that I'm responsible for the whole thing, not just a new addition. We've worked too hard to knowingly put things at risk. It's good to know your limitations

Then you only exceed them a little, not a lot
bta vs sebae : generally btas are considered easier because they're less demanding and more forgiving, but they're still listed in the difficult category. We just got one 9 days ago (I've been anxious, but I think it's doing well. I'm fairly certain it ate today!) but I've been waiting, reading, and asking questions for much longer! I found the FAQ for nems and clowns near the top of this forum helpful, as well as a site that I've seen recommended here (and I've recommended it too) called
http://www.karensroseanemones.com/
it's dedicated to btas. Karen is a long time bta owner, has rescued many (although she doesn't recommed this for everyone) and has included a lot of pictures so you can see what she's talking about.
Glad this one's eating and that the clowns are loving it!
BTW - sometime this year I'm hoping to add some black occells too! My bta is a beautiful red rose

I think the color combination will be striking.
Good luck!