Welcome!
Congratulations on completing your state requirements for endorsement in gifted education, and successfully advocating to get a gifted program at your local school, all while raising gifted kids.
Although it may be a moot point, I'm confused about the endorsement. To teach gifted students, does your state require the endorsement, or is the credential considered a "plus"? To be a gifted coordinator, does the state require the endorsement? Is preference given to coordinator candidates with backgrounds in gifted ed, or other specialties such as school administration, school psychologist, legal compliance, special ed (if sensing a large portion of gifted students are identified as 2e), etc?
If I understand correctly, the local school is a small one, and the governor's school will be acting as a gifted magnet? On one hand, a commute of 50 minutes does sound like an excessive hardship. On the other hand, gifted kids are a small fraction of the population and a school may need to draw from a large area to fill a gifted school.
The situation sounds less than ideal, as though possibly intended to encourage families to "voluntarily" choose courses which are not advanced. In a small school it may be difficult to gather sufficient support to advocate for a change, but possibly students in the small school could participate in the classes conducted at the governor's school, utilizing teleconferencing technology?
Regardless of the availability of advanced classes, gifted kids are often happiest if they receive supplement at home in areas of interest.