Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
There is a real lack of any sort of physical wall or at least a tank. Something traditional such as Forretress or Skarmory would fit nicely. I would put this in over floatzel because you already have Ninjask for the physical sweep. Hope this helps.