Awesome! That is one of two directions I was going to suggest you go. I am down in Broward County - where in the state are you? My high school offers CS Discoveries to students in all four grade levels.
Of course, I cannot say with certainty that your area would be doing it the same way that another area would. Considering that, I would absolutely suggest reaching out to your district STEM, Applied Learning or Science (that's right...Science) curriculum coordinator. They would have the latest as far as course codes being used in your district. _That also might help with your pitch to administration. If you can show you are following district conventions, implementation will likely be smoother from an administrative standpoint (that is important to them).
On the other hand, if your district contact tells you that there is no course code currently in use, go with the one you have linked above!