I think a wave maker would be an excellent idea! You don't need a filter if you are running a skimmer and have enough biological filtration (LR). As roka said they are useful for running carbon and water movement. In my tank I just run a skimmer and a HOB fuge. It works well for me.
regular Flourecent lights will suffice for a FOWLR tank. I always suggest weekly PWC`s no matter what size tank and IMO a skimmer is always on time in a SW tank. I`m going to send this post to the appropiate forum