If you have a reason to do it, like a fellowship, another degree program, a clerkship, etc., then it's not a big deal.
If you don't have a reason, other than to avoid taking the bar for another 6 months or just goof off for a while, I wouldn't do it. It's especially a bad idea if you'll have a gap in your resume.
Also, employers may see that you graduated in May but didn't take the bar until Feb and may assume that you failed the first time. Now, generally, as long as you pass, failing once isn't the end of the world. But if you're entering this job market any time soon, employers are ultra picky and may turn that into a strike against you.