Idk... Really hard for me to get past the girl-punching.
I've never met a guy who used to smash girls in the face, but had learned his lesson. Even though he was an 18 year old kid, to me, his offense is a sign of much deeper troubles... the kind that you don't just grow out of.
There will be incidents and it doesn't matter who he signs with. The real question, for me, is whether or not he will be able to keep them out of the media with the money he will make, because you can't tell me that he doesn't have an anger problem and an impulse control issue. People who abuse weaker people have brain chemistry problems and only a simpleton would believe that the recorded infraction was his first or only one.
I'm not saying that he can't get better... Just that he couldn't have gotten better yet. Abuse isn't a childish mistake that one will just stop when they mature. It should drop his draft stock as much as it would've dropped if he had a serious crack or meth addiction, because any team that drafts him will incur risks at least as high as those.
Edit: Sorry for the rant... I do know that the girl hit him and that it wasn't his girlfriend... Men hitting women is a super sore spot for me and it is entirely possible that I automatically assumed a pattern where none was... It still strikes me as extremely abnormal behavior, but I shouldn't "diagnose" the guy without having been there... That being said, still too risky to draft, in my eyes...