Stocking a 40 Gallon

Hi Everyone, I recently set up a 40 gallon frag tank. It is a little over a month old and has one snowflake clownfish, a fireshrimp, and some blue leg hermits. It has an custom acylic sump, with a psk 100 skimmer with purigen in the sump, later I will look in to a carbon/gfo dual reactor. Oh, and it also has one small montipora stetosa, and an unidentified sps frag. (I realize they might bleach in this new system, but so far so good). Now that the tank is on its wy to being well established I am looked into stocking it. I would like to add another snowflake clown, and a kole tang. Yeah a kole tang! since these fish are grazers it should be fine in my tank for 3 years if I pick up a small one, they do not swim like crazy or grow extremely fast like some other tangs do. If it wouldn't be too heavy of a bioload I would also like to add 2 blue green chromis:D Tell me what you think! P.S. the tank will be mainly lps with some sps and a zoa garden.