I applaud his attempt, but the 12 month goal strikes me as ridiculous; this will likely become yet another example of the planning fallacy.
Also, why is he studying physics 1 before calculus 1?
I wouldn't be sure about this. If you read his blog, you'll know he's completed many many projects and is probably much more aware of the planning fallacy than most people.
Scott H. Young is giving himself 12 months to complete MIT's computer science curriculum on his own, via MIT's OpenCourseWare.