It's not so much a question of "How many big predators can inhabit an acre".. The question should be "How much biomass should be present in forage per predator"... each pound of predator requires 10lbs of forage consumed to "grow" a pound.. maintenance may be 15 pounds to hold that value. That's 5,000 FHM per pound of Predator. This is where I think the list above would put you in trouble.
The 500 YP and numerous sunfish will work over "some" of the FHM reproduction.
On the 500 BG I would suggest 3-5" BG (sexually mature) only if planning predator heavy so they all spawn this year-hundreds of thousands of new hatch for predators yet to come. Depending on size of YP you stock, if they would potentially spawn spring of 22 then you have even more forage choices for newly stocked predators but I don't want to get too far ahead here not knowing if YP will do well there, probably will but I hate to assume without more pond detail and water source.
You can play with several of the predators you have listed but the numbers supportable in reality are quite a ways lower than what you have listed.
I think WAE and HSB can be added at any time in the future but if adding both I'd hold back to 10-15/acre for each of the two..same rule applies here in that they (each fish) is going to need to eat somewhere in the 10-15lbs of forage to grow 1lb so that's around 5,000 to 6,000 POUNDS of forage just for the WAE and HSB numbers you have listed-to grow to one pound..
You see what I'm seeing yet?? :-))
