Ok, I’m assuming that in 8th you will learn systems of equations, polynomials, exponents, quadrilaterals, etc. This means that you are right on track to take geometry in 9th. So are you asking if you should switch to algebra for next year? Because from what you’ve said, you will be in algebra next year. Maybe you don’t know the difference between algebra I and II? Algebra I is typically taken in 8th, and Algebra II in sophomore year.