Switz those calls and puts (80 call and 65 put) you suggested you might buy are way too far out of the money. I suggested a 70 call and 65 put, though the Market isnt going jump much either way on this news, though people think it might.
Remember, I first said +-12% to March Expiration - not on one Event day. And then I was more specific - a potential low at $65 and high at $76, which would limit the upside on the 70 call and 65 put, or would limit your upside to earning about 40% on the 70 call by itself assuming the Avastin event occurs and the stock responds positively.
The $78 target assumes a healthy jump by carrying the 70 call to March expiration, assuming the fundamentals improve and the oversold condition ceases, bringing it back to its old October high near $78.
There are obviously better trades out there, this is not the best one out there at this time, but I suppose the 70 call isnt so bad.