Price is coming up on the b/w 3-4.
The R/R seems to favor a long position at these levels.
A good target would be the 2015 high print around 8.50.
For me, I always think about risk, not as , but the probability of a permanent loss of capital. You can never know for sure what the probability is but I think most people can come to a conclusion about what is most likely.
Two links to get an idea of the companies troubles:
What to do?
How much of your portfolio are you willing to risk to see if this trade will play out in your favor? 1%, 2%, 5%? Only you can answer that questions.