Your goal is not unreasonable at all. Many here have done what you have proposed or close to it. Your first priority at this point should be to stay out of debt and build your income. Whatever you end up making, income wise, make a point to save and invest as much as you can. As far as investments go, many here are fans of low cost diversified index funds such as those offered by Vanguard and Fidelity. Once you start investing, manage your taxes by taking advantage of all the tax deferred options you can (401(k), IRA, etc.).
Good luck!