First off, I want to say that I'm thoroughly impressed that you did this head in just a few hours. I mean, the ears, the eyes, the mouth, the nose, the cheeks and the overall shape. All the tweaking, etc, etc. That's some really quick work. Almost doesn't seem possible to me but then again I've only been doing 3d for four months.

If it were me, I'd model the character in the standard di vinci pose and then try really hard to rig the character. If you you do, then you can pose the character any way you want, including animating him, in case you want to use him in the future. If you model him in a pose, then it will make it very difficult if you ever decide to rig him. And if it turns out that you don't like the pose that you modeled him in, you will have a hard time readjusting him.

Welcome to the challenge!