should i get an anemone?

Hi there i have roughly a 55 gallons or 210 litter tank in this i have:
1 strawberry fish
1 cleaner wrasse
1 yellow tang
2 true wild caught percular clown fish (pair)

i was wondering weather or not to get an anemone or not?
i am currently running a v2 400 protine skimmer a heater, T5 lighting and am about to do a small sump.

have i got enough lighting?
what heat dose the anemone need?
as much detail as possible please!!!

thanks