I can’t chance you but I expect you would be competitive. You might look at planning out your semesters at Columbia, I expect you will need to attend three years/six semesters because of the core requirements (which sounds like you are aware.)
You don’t have to share this here, but will need to share with Columbia why you want to transfer, why Columbia is a better fit, and cover what you do between Dec and May during your schooling hiatus.
If you are certain you want to transfer, you would need to apply to some schools with higher acceptance rates including at least one affordable highly likely option.
Good luck to you.