Newbie to sw

[Kimmi7]

its a 4' long by about 2' tall and 18" wide tank. I dont have a sump yet as I am not sure what size to go with, was thinking 20g tall to a 30g tall. I'd like to have the type of sump that has the eco system in itself. I was thinking of drilling the holes on each end of the tank on the sides, as this will be in the family room and i have room for pipes on any sides. Thanks for the welcome. It actually was my boyfriends idea for a sw tank and we do have the empty one just sitting there lol