Currently Army, thinking about..

I started off my military career in January 2012. Joined the Air Force as a special operations weather trainee. I ended up failing the PAST test on Day 1 of selection. By October, I was sitting at my house no longer in. 4 years later, joined the Army. Well, I’m now an E6 in the army and I ETS in December. I’m thinking about going Air National Guard. And I could call a recruiter, but I don’t want to do that unless I’m certain that there’s a good chance. So that leads me to my question(s). What are the chances that they will actually let me? Anyone here done it? Do they offer any bonuses?