My friend did law + business, if you feel you can handle both and can excel then sure, I see why not!
You just need to be balance out study commitments for both. I personally didnt do it because i had bad time management so i knew at the outset that one of the subjects will gake a huge dip.
My friend said, if he did one subject he would have gotten a first. But again the way i see it, you need to really have good time management and make sure you dont muddle up writing styles for both courses when it comes to assignments.