Rushing A Frat as a Sophomore.

Hey, I am a Freshmen in Purdue wanting to rush a fraternity next semester(Next semester I will be a Sophomore). My question is how much time does pledging take up? The thing is I have to take 17 credit hours next semester and I am also working on research project next semester which might take up to 6-7 hours per week.
So will I get time to focus on my Academics and research while I am pledging? or Pledging will take up a lot of time?