A few thoughts...
First, welcome to the forum!
The pond sounds as though it can support trout year round. With this means cool temps, temps so cool bluegill(BG) wouldn't grow well. The next dilemma is that trout are not able to control BG reproduction, meaning with no effective predators, if your BG were to spawn which even in a cooler pond such as yours is highly possible, you'd end up with a mass of stunted BG. I would stick with a trout only pond... You can stock different species and strains to add angling interest. (rainbow, golden, brook, brown, tiger) Fathead minnows can be added as forage, but if you feed pellets they nor any other forage species is really necessary IMO...
