I'd go with a perc as well. I like how they look better and I think they have more interesting "personalities".
I'm definitely not an expert, but I would suggest thinking twice before trying to keep an anemone in your tank. 1.) The tank is kind of small for one (many anemones get too big and they require stable parameters, which is very difficult in such a small tank) 2.) your lighting probably isn't the best for keeping one.. What kind of lighting do you have in your tank? 3.) You likely need to let your tank mature for a while longer first
Again, I'm not an expert so wait and see what other people think.