What's my path as a rising senior who decided to slack off the past three years?

Hey guys, in need of some support here. The thing is, it's the summer before my last year of undergrad and I'm sitting with zero experience a shitty GPA. Probably going to graduate with a 3.1 - 3.2. I know, I'm a bum. My question is, from this point what is the best thing I could be doing right now?

I have aggressively applied to local firms in the past month for potential part-time work and am waiting to hear back after a couple interviews, but in the meantime, is there something else more worth my time? I plan on pursuing CPA licensure soon after graduating, but I think experience should be a priority. So far, I've been cold emailing a bunch of local firms with my resume, but am I not doing enough right now? And beyond what I could be doing right now, what is my realistic ideal path to take for the next five years?