Apply as soon as possible.

I am pretty sure if you want your credits for both the fall and spring semesters to transfer then they will wait and will look at the gpa of the transferred courses. Keep in mind though that not every class transfers from college to college. I don't know if your state offers this but mine has njtransfer.org or .com and it allows you to see what classes will transfer between schools in New Jersey. You don't want to get your credits and then find out that they aren't taking a class and be short and then have them look at your high school records anyway.