I minored in Legal Studies and loved it. I'm not saying it's useful or beneficial, but it helped me decide that I definitely wanted to go to law school. That said, I wouldn't consider it advantageous for the LSAT or admissions. The best part about it was that I had to take a legal research class so I know how to use resources in a T14 law library without getting evil death stares from actual law students
If you go with criminal justice, in the very least it might help you solidify your decisions like my minor did for me. You might re-learn everything in law school but it's fun and you might be at a slight advantage in that you'll already be familiar with some cases and concepts.
If you're looking for a straight up LSAT advantage, philosophy is the clear winner here. Time and time again, philosophy comes out as the most useful major/minor for the LSAT and you're more likely to see more definitive and quantifiable results from it than from criminal justice. But in the end, it just depends on what you see as most beneficial to yourself. Good luck!