UChicago Priority vs Regular Deadline acceptance rate

I'm interested in taking a UChicago summer session course (probably a 1 week immersion)

However, with the priority deadline coming up on Wednesday, and me being a procrastinator who still hasn't started the application, should I apply priority deadline or regular?

Will applying to the regular deadline (March 12?) significantly affect my chances of being admitted?

For context, I have a 3.8 UW, 1570 SAT, and have decent/good ECs (research, internships, competitive sports, clubs, along with some volunteering)