Potential New Boyfriend...?

I have a huge crush on my coworker. He's around the same age as I am (20-25 yrs. old) and he's EXTREMELY good-looking (well, in my opinion, at least)! He has a great laugh and a good sense of humor. 
Ever since he started working at the company last May, I've been working up my nerve to actually have a coherent conversation with him, one where it doesn't lapse into an awkward silence. He mentioned that he used to do Taekwondo and encouraged me to try it. I have yet to sign up for a class because I don't want to get stuck in a contract (free trials, anyone?).
This week, I asked him what he did in his free time. He said he was really into cars and hanging out with his friends. The new movie, Furious 7, comes out on Friday. I asked him if he'd be interested in going to see the movie with my friends and I. HE SAID "YES "!!!!! 
I want to know when is the right time to ask him out.