TinCupTom I think you are talking about adding Smoked Meat Stabilizer instead of the Encapsulated Citric Acid? If that is the case then you would not want to use them together, use one or the other. The Smoked Meat Stabilizer will not offer the same level of tanginess that the Citric Acid will, it does contain ascorbic acid but it is not enough to offer a noticeable level of tanginess.
There really isn’t anything to use in place of the Encapsulated Citric Acid to offer the same level of tang. I use the Citric Acid in almost everything I do as I also love the taste it adds. So, if you are looking for that I would just go with the Encapsulated Citric Acid instead of the smoked meat stabilizer.
Now, if you were talking about Sure Cure instead of Smoked Meat Stabilizer then yes, you want to use them together as the Citric Acid will work as a cure accelerator and also adds the tanginess!