Right, no school will consider your application until all the required components are submitted.
By submitting the application early:
*Pharmcas will be able to calculate your GPAs and verify your transcripts(4ish week turnaround).
*You have the peace of mind knowing that the only thing left on your application is the submission of your PCAT scores and academic updates.
There is literally no difference in either scenario from the vantage point of the schools you are applying to, but I think you would benefit from the early submission.