If I am recalling your state correctly, you have something like a dozen options for online public schools, which would all be free, including multiple K12-powered schools, Connections Academy-powered schools, and those with self-made or cross-platform-curated curricula. If your objective is to be self-paced, you probably want to avoid the last category of online schools, although they also have the most synchronous facetime with teachers.
A few of the programs tout their GT programming, including SSA and ability grouping (I am including those with live teachers, not just computer-adaptive), but generally none of them have GT-specific programs until grade 3, and some are not until middle school. I would start by poking around your state GT parent association chats regarding local experiences with public online schools, especially regarding the flexibility of school administrators (who are still humans, and not bots!).
