I think you missed the bus if you want to be long. Eventually people are going to take profits.
A few different trend following systems I coded have been long since $26.50 post split in August, 2006. I'd say they have significant wiggle room versus a more recent entry, which is much more riskier in the longer term. However If you sit at the screen all day, this might be your best stock to trade, if you could handle the daily volatility.
Shorting a $100 stock thats volatile like that is very expensive if you have to hedge. $90.00 puts are $7.30.
I'd wait til there was a more decisive break in the trend for the short side entry to play out.