LSAT Diagnostic Practice - Paper vs. Computer

Hello, does anyone have advise given this topic?

Khan academy does all it's diagnostics on the computer, but this does not simulate actual test conditions. In addition, it does not allow me to do blind review since all the answers are automatically given upon reviewing the questions. There is no opportunity to try the question again, untimed, without knowing what the correct answer is.

1. How problematic do you think this is?
2. Is there anyway to take the test on paper and then plug in the numbers to Khan academy?

Thank you,
Ezra