I'm just double-checking that Baron Fel with Push The Limit can take focus as an action AND receive the "assigned" focus for stressing himself. I know that you cannot take two of the same action types in the same turn, but I'm guessing that because this is assigned and not taken it is good.

Yes, that is correct. He can perform the action and be given another token from his ability, since it is not an action.

Getting a token is not performing the action.