First, let's make sure that you understand that 'atheism' is simply the state of having no belief that god(s) exist. That's all it means. If you do not believe that there is a god, you are an atheist. Period.
As for the rest... that's great. Always question and always search for truth with a skeptical and critical eye. If you aren't sure whether or not you believe that there is a god, so be it. Keep looking into 'how things work and why'. Eventually, you will come to a conclusion that god(s) either exist or don't. Or you will never reach a conclusion either way. It really doesn't matter. What matters is how you live your life and treat yourself and your fellow man.
As for the rest... that's great. Always question and always search for truth with a skeptical and critical eye. If you aren't sure whether or not you believe that there is a god, so be it. Keep looking into 'how things work and why'. Eventually, you will come to a conclusion that god(s) either exist or don't. Or you will never reach a conclusion either way. It really doesn't matter. What matters is how you live your life and treat yourself and your fellow man.