I have the summer to prepare myself for a high school calculus-based physics course; however, I will have to study calculus by myself. I've completed a course in precalculus and I'm beginning to read "How to Prove It," by Velleman.
I am looking for a textbook that has mathematical rigor (i.e. not memorizing formulas), yet also provides adequate foundations for a physics course. From similar stack exchange questions, my top candidates are Spivak's Calculus and Apostol's Calculus (Vol. 1). Which one of these textbooks, if any, would be the best choice for my situation?