Latuda is relatively new. Hope it works out for you, it looks promising in studies.
If you're not getting the relief you need from Paxil, maybe it's time to either up the dose to the maximum dose or to switch to a TCA or an MAOI?
Often, if an MAOI is effective, it makes living with the dietary constraints seem like a walk in the park. If your anxiety and or depression are severe enough to be on 3 psychotropic medications simultaneously, maybe monotherapy with something strong like an MAOI (Parnate or Nardil) is a viable option?