What are my potentials and ceilings?

I can’t say anything regarding those specific college’s.

You mentioned a 4.2. This means you are talking about a weighted gpa. For several reasons, college’s want to see an unweighted gpa or will translate your grades into their own weighted gpa which may or may not match your school’s.

What matters more gpa/test) depends on the school. In most cases it truly is a combination of the two.

College’s will look at your total gpa. However I have readed many times about a compelling statement/essay where appropriate in the application process about how you turned things around will help.