You should be fine...I have a 210 with about 10 anemones and 3 different species of clowns.
I had a pair of mated ocellaris clows then added 3 smaller ones and so now they all became a school more or less and they host 1 sebae and 4 different colored BTAs (3+ years for the pair, 2.5 years on the other 3)
I also have a pair of black saddleback clowns that strictly host my blue carpet anemone (Added some time after the ocellaris, ~2 years)
And I have a pair of pink skunk clowns that host only my 2 Magnificas. (Recent addition, ~2 months)
*No fighting between any of the species, I definitely think the anemones help with the territorial issues that may have occured simply because every clown keeps to their own anemone(s) and doesn't really wander around for a new spot.