How to: Starting SA Early on Resume?

Hey all,

This summer, my sophomore summer, i'm doing a finance summer analyst role at a F500 (fp&a, corporate finance, corp m&a - not IBD).

My group lead just emailed me asking if I wanted to start early, working part-time at the firm's office NOW, and would still be a part of the SA intern class activities in the summer.

How would I go about putting this on my resume for IBD recruiting? Two separate positions, one as an off-cycle intern and one as a summer intern? Combine them? Any insight would be appreciated, I have two other internships that I want to leave on my resume so space is definitely the issue. My only concern is that recruiters will think I leveraged my part-time into a summer internship role instead of landing the SA first. Is that a bad look and less "impressive?"

If needed, I can post my resume for reference.