Thanks for the kind words.
Nitrate tolerance is not something I would be super concerned about with just using the lower amount if nitrates in a preworkout.
You really see it with synthetic nitrate drugs used over a longer period of time.
That being said the antioxidant properties of BA should provide some benefit. If you want to be on the safe side Vitamin C is what has been shown in studies (other than other drugs) to help and is relatively cheap. Even just taking a multivitamin should provide enough protection, if it is even needed.