I'm not sure why dotybacks are often called great "starter" fish as I've heard horror stories before.
In regards to feelings, it sounds like you have it unde control, so it's about getting the right fish mix in th tank and you're set.
I'd personally get rid of the angel and dotty and look into getting peaceful fish only
Another problem is also just pure fish behavior... Some fish can be model citizens and the same fish in someone elses tank can be just a plain pain in the ass regardless...
Also clowns can be quite aggressive
what type of clown is it? Some clowns can be quite aggressive as well. It is a possibility to get them slightly less aggressive if they are paired, however they will always be overprotective towards thir so called home. I have a black ocellaris pair and they both attack and bite me if I go close to their anemone.