well I like cats and characins... I’d get wolves and odd ball cats. But it isn’t my tank. I’m just telling you what is likely to happen. You’re not the only one that has wanted to try similar if not the same cohabs. But for all we know you could get lucky and get away with it. However still some of the species you mention would eventually grow uncomfortable due to size. Such as aimara or gatf. That’s if you get lucky and they all get along. You’re tank is big there’s a lot of options for it. Just stick with fish under 30” that’s have mild tempers and make sure they max around the same size so no one becomes a meal. Also you want to research each species growth rate. Whatever grows the slowest you want to start growing out first.
Since i cant upgrade i ll stay with max 30” as you said. I ll play with some carachins and catfish. Maybe an arowana too.