I have EBA with corydoras and bristle nose plecos and angels. With no problems.
I also had EBA with a red line gold sevrum they got along okay but the sevrum started going after the angels so I had to move it.
I never seen the sevrum and Acara have any problems with each other. But they were both pretty small at the time.
One thing to think about though, sevrum can get to be 12 inches that's a pretty big fish to have in a community type setting in a 75. You may need to have a back up plan for a larger tank .