Why would you add Anavar in at week 12 of a cycle?. The cycle is finished. It does not make any sense. After the half life of test is up. Yes add in HCG for 20 days with Clomid and Nolvadex.
If 250 of test does nothing for you when you have never taken gear. I would say you are a poor responder. 250 of test is like rocket fuel for someone who has never taken it before. I would assume that a first cycle you would put on 6-8kg, especially with Anavar.
Unlikely steroids is the primary cause of your anxiety. I would say you have a underlaying pre-existing anxiety disorder. If steroids trigger that condition, I would refrain from their use.