SP distribution

Hi guys, I'm a little lost about what to put SP into for my DB. He's level 27. I'm not sure whether to put more SP into booster, put it into something else, or save it for the next job advancement.

Any recommendations would be greatly appreciated. So would a build for the next advancement. >.<

http://www.hidden-street.net/forum/threa...e-SP-Guide

I'm following this thing except without maxing the NX-only skills. Works pretty well for me and is updated.