in personal experience io would only have one or two fish(the percula are good starters) in there for quite a while untill you are sure that everything is stable and i have had bad experiences with hermit crabs they killed a sea hair and a tone of snails
i would recomend some astro snail
i would start off slow with shrinp because they are more sensitive the stuff then the fish are
go to this link
http://reefkeeping.com/issues/2004-08/totm/index.htm
this is a butifull 65 gal tank with simple hardy and cheap corals with some exceptions