Hya
In my experience most captive bred seahorses (Kuda, Riedi, Fuscus) aren't usually that difficult to get feeding as they're weaned onto frozen food at an early age. The problem is making sure their tank mates are also slow feeders. (Seahorses just like to contemplate their food for a while first). Many of the tank mates suitable for seahorses are more suited to a well established system.
After the tank has fully cycled and is suitable for fish I would start off with something like a full clean up crew (small hermits, snails etc)
I would be inclined to start with the seahorses (many will probably disagree with this and shoot me down in flames!). The justification for me saying this is that if you do enough research and get healthy, feeding seahorses, you can get some experience with them first and let them settle fully in the tank before adding anyone else who may cause them stress. I found it was far more difficult to interpret natural (in a tank) seahorse behaviour when there were other tank mates in with them. Once you are completely happy with your seahorse keeping skills you can start to think about adding other fish. I found that suitable seahorse tank mates were harder to keep than the seahorses! I keep my seahorses with fish such as copperbanded butterfly fish, shrimp fish, garden eels, gobies, pipe fish and shrimps (obviously you would need to select according to your tank size). I have also had far more success with seahorses when using loads of live rock and macro algae.
Hope that helps
Oh and I've just seen the above post - agreed - seahorses are not as difficult to keep as people often think
GL to you. 
