Is it better to get real-world or textbook experience if I'm pursing a career in law?

You will need both to make yourself a good applicant for law school. Admissions will want well-rounded students with diverse experiences and good grades. Reading articles on topics that interest you will probably also help in preparation for law school as you will be reading cases from casebooks that varies in length.

Law touches on every possible aspect of the human experience.

A background as a construction foreman would help you be knowledgeable in a construction case.
A background working in a museum would help you in a conflict related to museum exhibits.
You cannot begin to imagine how life experience will assist you in handling cases.
I used to be a cop, now do some work in criminal defense/Civil Rights cases.
You can't learn life from a book, you have to live it.
Don't ignore your studies, but, at the same time, see what the world has to offer!
And definitely stay on top of your computer skills. . .

I doubt this was the answer you were looking for, but hope it has helped.
Kim