I agree that people shouldn't be giving you any grief.
No one should worry about your fish getting too big for your tank, because they will die long before that.
No problems there.
People have tried to break the news to you gently, but really you need to lose a lot of money before you will understand....a financial kick in the rear.
Large angels tend not to be cheap, and it is a pity many will die in your hands, but if it gets you out of this hobby, every loss was worth it. Your sentence about the emporer angel getting ick after being transported to your house is pretty telling. Your two angels will probably kill each other, should they be lucky enough to live so long, as will your two tangs. But odds are they will die of the stress of being confined in a small tank, with too many tank mates and without a proper diet.
Now, you bought a fish, and didn't ask what it eats? Obviously, not blood worms and brine, and the latter is almost worthless. Try angel diet, and other frozen formulations. Flakes are not enough, for any marine fish, IMO.
But your posts seem to indicate that you are the "use it then lose it" type (fish are but objects for your entertainment), why not just bring it back for something that is less of a hassle?
Damsel fish have loads of color, and will be great for your size tank, and they will happily eat the food you have, in addition to flakes and pellets, and each other.
That should be entertaining enough.
There are plenty of smaller fish that have color, and would be suitable for your tank. If you had been open to that, people would share their suggestions, and this could have been more productive. Perhaps you'll reconsider.