Frogspawn needs decent (moderate to high) lighting with decent flow.
Clowns should eat what ever you feed them. Some marine flake and pellet with variety should keep them fine.
Premium aquatics is good, however, the rocks purpose is the bacteria, the rest is just extra.
Haitian condylactic do not naturally host in the wild, get pretty big and requite good lighting.
Cinnamon clowns are like all clown fish, not too agressive, and stay moderately small.
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You should get some more different types of algae for the seahorse tank; as well as live rock, you can't get a much better filter. The rock will also allow a larger copepod population. You should also get a good amount of rubble for the fuge section for more copepod growth.
What do you plan of feeding your seahorses?