Pushing 40mg over 4 weeks in BAC with its slightly acidic nature will hold it together, but it will degrade. But you have to factor the degradation, how much are you using (10mg death champ) or 5mg is your max dose.
I would enjoy multiple dose options, I know it will come. Do I think 40mg is a lot to store in a vial, make room for much more than 1ml of BAC.