<p>I second hsmomstef’s recommendations.
There are some schools one can apply to by mid January rather than late December. You have decent SAT and SATII scores. Use your Harvard Extension classes grades to make up for your mediocre high school GPA. Secure a recommendation letter or two from your Harvard profs asap. </p>
<p>You could also consider applying to some local community colleges such as Middlesex Community College. How about UMass-Boston? Or Salem State College? This would be for one year in which you would build up a record to add to your Harvard Extension classes and then consider transferring to a four year college.</p>