advice on my setup needed

[trilinearmipmap]

I'm not the expert but here's what I would do, in order:

1. Ditch the naso tang, well maybe not now but in a while before it gets huge.
2. Make sure you have a large lighted refugium for growing macros.
3. Keep an eye out in the "For Sale" section for a good skimmer.
4. Consider ditching the lionfish and the snowflake moray, aside from their borderline reef-safeness they must add a huge nutrient load to your system.

I would consider keeping the lighting the same and growing mushrooms/soft corals, as far as I understand a higher nutrient level actually benefits these corals.

Otherwise just keep it FOWLR if you want those large predators in your tank, JMO.