56g stocking help

Ive have a 56g (30x18x24) barebottom tank set up for almost two months now and im ready to stock it with fish and corals. Im using 2 koralia 4's and a 550gph return pump for flow so there is a decent amount of flow in the tank. Im also using a 400w MH for lighting.

I am for sure getting a pair of GSM clowns and am unsure of what to put with them in my tank. Given my tank setup could anyone offer some suggestions on what to put with these fish? This will be an sps tank.

 

The GSM clowns can be very aggressive, so I would suggest other, more aggressive type fish. I think damsels would be a good choice, a six line wrasse, psuedo chromis would all be good options.

 

I would stay away from docile fish like a banggai cardinal i would rather go with royal gamma, fire fish, maybe some blue chromis, 6 line wrasse like he said