I personally don't have a choice about going to law school straight off, since I have a lovely non-employable liberal arts major.
If I stood a chance of getting a well-paying job, I might try it, just to take some time off from SCHOOL for the first time in 21 years and experience the "real world" for a bit, see what I really want.
Also, I second the above poster. Law school is no joke. Maybe in your situation where you just think it would just be helpful you could take some law classes as a guest student? Maybe even during your MBA. (No idea how MBA works, but several law schools will allow you to take a few electives from other grad programs.)
Practicing the law is the only career I have wanted for a long time, and I'm still really iffy about the ordeal that is getting a J.D.!
If you really want one, though, more power to you. I also second the opinion that you should try and go somewhere you get good money.
No idea what your numbers are like, but Northwestern tries to structure itself more like a business program, loves work experience and has the only 3-year combined JD/MBA (... if you're that insane). It'd be a good one to look into if you're interested.