I wholeheartedly agree that you need to work during the summers. If you don't work in your first summer, OCI recruiters will count that against you and perhaps assume the worst. If you don't work in your second summer, it's going to be really hard to get an entry-level job at a big/medium-size firm since the second summer is like a long, paid interview.
The only purpose behind graduating early, if even by one semester, would be to have extra time to study for the bar. In that case, you'll to take out more money in bar loans. Besides, if you stay on the schedule that BarBri tells you, you should pass.