If you hold longer than one year you can sell everything and you don't need to pay the 15% penalty. Then your taxes may be around 30% - that would be my guess.
As far as I know, the 15% penalty only applies if you make more than a million and sell prior to 1 year.
But again, when the time comes, look for your taxes attorney to ask for advice.
Good luck to us!
**DISCLOSURE** My posts express my sole opinion. They are not investment advice nor a recommendation regarding any course of action. My opinions are subject to change without notice. Assess investments according to your personal financial circumstances.