I dont think trout are going to work, hes got cichlids in it lol. But if you do want some natives, sunfish dont get too big and they will be fine in the tropical temps.you should definetly put some natives in there though...maybe some lm or sm bass??...or trout too if you wanna spend the extra money to get a cooling system pending the water temp
depending on the size of each of the fish but i agree bluegills are tough little fishI bluegill could probably hold its own in a cichlid tank if your interested