First of all, there is nothing wrong with taking Calc again in college even if you did well on the AP test.
At the college my DD will attend, it says: “However, a student’s own perception of strength in mathematics is an important factor when advising students about math placement. For example, students who receive AP credit(s) for calculus sometimes choose to forgo the AP credit and retake the class(es) at TCNJ recognizing the faster pace and increased rigor of TCNJ courses. Others choose to accept the AP credit and do very well.”
I am an engineer and took calculus in HS, but retook it in college. At CWRU it says:
“Eligible students with credit are encouraged to attempt the next course in the sequence. Those who are concerned
about the strength of their background or would like to review the material of the first course in the sequence are
permitted to repeat the course if desired. However, students should feel comfortable attempting a higher level course
at the beginning of the semester. The first two weeks of each semester comprise the drop/add period, during which
students in higher-level courses may opt to change their enrollments to a lower-level course if they feel that the initial
course is too challenging”
So that seems like the best case…enroll in both and drop one of them. Most curriculums are built around starting with Calc I anyway so you would in no way be “behind”.