The Humu-humu is less agressive than the clown. I would keep away from the clown if you'd like a decent community tank. A humu-humu is an adorable peaceful trigger in my experience. It's even afraid of a yellow tail damsel.
Experiences vary though.
It's better for you to picture what kind of FO
tank you are leading up to. It looks like the population you are aiming for is too diverse. We have angels and tangs along with puffers and triggers.
I have success with a humu-humu and a porcupine puffer (very peaceful to each other), white spotted puffer, a red tail filefish, and a cow fish all in the same tank. I figured I was aiming towards that type of SW
fish (puffers, boxfish, trigger). I will eventually upgrade the size though. Right now they are juvies and are friendly to each other. Changes may have to be made later on.
Some people are into Angels and Tangs at the same time. Just picture what type of population you want to dominate in the tank and it will help you narrow down your choices.