What are you thinking? Nothing wrong with taking profits, but if you put that many shares out there, the MM will just lower the ask and you will be lucky to get your price. Plus, selling at a support level usually isn't the best idea. Sell at resistance, not support.
Man, you've got some balls of steel. You hold this long and then decide to flip? I wish you luck, and hopefully greed does not come to bite you in the but. I've considered the same for many months, but have enough shares that I will be very happy when this begins to run. There are just to many potential surprises to take the risk at this time.