You can certainly apply now and hold off on sending scores before you retake the ACT in September. However, you might want to ask yourself whether a 3rd ACT will be noticeably different. You may also consider explaining your GPA situation on the optional personal statement and having a counselor or an instructor submit a letter on your behalf. Your grades are trending in the right direction which is very good news.
If you end up in CLA, you can always minor in management. My D3 is looking at CSOM and CLA and will either major in business/minor in economics or do the reverse. You may also be able to transfer colleges based on your freshman year GPA and coursework so you might look into that option as well.
Good luck to you!