Look For Another Internship While Already Working One?

I'm a senior at a non-target in Chicago and I'm at my third internship. I did Audit, RE Development, and now Asset Management. I'm still not sure what I want to do full time.

I'm seeing some good internships posted on my school's career site (looking at a few IB ones for the summer). The place I'm at now is cool and has some top-notch PMs. They like me and told me they'd ideally keep me on until graduation and I'd go full time.

I'm not really content though because there are areas of finance I haven't tried yet. I could squeeze in an IBanking internship and a trading internship. But if I don't like it or they don't like me, I fucked up my career trajectory.

I have no interest in IB in the long-run, but I was talking to a guy from my firm at happy hour yesterday (CPA) and he's working on an MBA from UChicago. He told me that a lot of guys re-brand themselves after an MBA and go in as an IB associate, do 3 years, and then go to a HF or PE.

I have no chance of getting into a top-tier MBA program straight out of undergrad. If I stay here, I'd get a CFA and they'd pay for my MBA in a few years. And I'd have a better shot of getting into a good MBA program with some work experience. Combined with my 3.9 undergrad GPA and military experience, I think I'd have a decent shot if I nail the GMATs and write a kickass essay. Then, I could re-brand if I wanted to or stay on my current path. Or I could do an IB internship and get on that path right away…

I’m pretty comfortable not doing a trading internship. I love trading as a hobby, but I don’t know if I would do it full time. It’d be nice to get the experience, but it’s whatever. I think I'm more of an investor at heart. I love to do fundamental research and dig into the inner workings of companies/industries/whatever.

In the long-run, I want to be in front office buy-side [AM, HF, PE (does that count as buy-side?)]. I'm just trying to figure out how to position myself currently to get there. Given my position, what do you guys think?