How much do you like sociology, and how much more would you prefer the other majors? If you are considering going on to PhD study, it would really be best to do so in a subject that you are interested in.
On the other hand, law school does not require any specific major, though there are some suggestions on undergraduate courses and majors at http://lawschoolnumbers.com/application-prep/making-undergraduate-courses-count-for-law-school and http://lawschoolnumbers.com/application-prep/choosing-your-major-for-prelaw .