A bunch of HN folks have formed a SICP study group, if you choose this route: http://news.ycombinator.com/item?id=428248
I would be happy to finish SICP in one year.
[edit: Now I am reading his blog more closely and he only started posting his answers in December. He started reading SICP in July]
well, he didn't do too much for the first 3 or so months. so he really got down to work around September iirc.