Having lots of territories and places to hide has been a big part of my success. With your stock, I'd strongly suggest using as much decor as you can. With fishes as territorial as that, why deny them territory? Having decor breaks up the line of sight, they don't have to stare each other down all day every day. "He was looking at me cross ways." I like wood and strawberry pots, not so much stacked rocks. I don't want anything that can fall and hurt a fish. As you probably know from your tank, most of my fishes are strong and super fast. I'm pretty sure rock stacks would never last in my tank.
By the way, just because you have decor doesn't mean the fishes won't have plenty of swiming room. I try to keep the plants, wood and pots mostly on the bottom half of the tank. The entire top half is totally open. I find most of my fishes want to hang out in their "house". They all come out to eat. The dovii is the main one that NEVER hides, swimming around where he pleases all day. I think he thinks the entire tank is his "house".