This is based not on support lines, but on pivot prices. I used both long-term 'standard' pivot points and 'Fibonacci' pivot points. To learn more about pivot points read:
Considering how my $220's prediction played out, I agree with your lines. My personal ones are a bit more conservative (I favor some other market sentiment indicators) but my prices are relatively in the same spot.
Comments
"Using Pivot Points For Predictions"
http://stockcharts.com/school/doku.php?id=chart_school%3Atechnical_indicators%3Apivot_points
http://www.investopedia.com/articles/technical/04/041404.asp