IB isn’t the be-all and end-all. Switching schools means switching a community, as you said. You have a robust support system and standing at your current school, which can be challenging to build as a new student. Also, are you already passionate about those two subjects? Because taking a conventional class in an area doesn’t always align with what you thought you might be learning. Consider exploring those two subjects on your own instead of taking formal classes by the IB. There are many online open course options where you can take a college course for free without getting credit.