I purchased the mantis. $40. He is about 6 inches long.
My sailfin was first tang. then added a tiny blue hippo, which was fine with him.
then added 3 tangs at once, yellow, purple and sohal. went well after a few days. Last was a naso. she went in smooth like one of the gang. No one even noticed. keep in mind that a month or two went by between adding fish.