Congratulations on your decision. I know what you are going through, I did the exact same thing 2 weeks ago. Full time startup starts for me in just 2 days, I cant wait.

I'm sure you know this, but make sure your company is cool with you starting your project right now. Mainly, that you are not under any IP agreements. The worse thing would be if your company catches wind of your work and decides that they want to "own" it.