470 to 600 in 2 months?

Hello everybody. I am a European non-native english, who just registerd at GMATClub and want to tell you my story, see what you think (any advice is handy)

I have been working at a Big4 Firm during the last 5 years, which means around 50-60 weekly hours of commitment. I tried studying for the gmat during 3 months, and only obtained a 470 score several months ago, (though to be honest I couldn't actually prepare for more than an hour daily during weekdays, and it wasn't that much quality time).

Here comes the turning point: I just had a leg injury that required surgery, so I now have 5 Full time weeks @ home without work (I assume I can study 7-8 quality hours / day), and then 3 weeks where I can only count with weekends (and maybe 1h daily of preparation) before the test.

I "only" need a 600 score to enter my dream BS... My questions are:

Is it rational to believe that I can make it (score increase of 130 points in the alloted time frame of 2 months)?
What free material should I use? (I prepared for my previous test with 1997-99 GMAT material however I noticed that the questions in the exam had absolutely nothing to do).

Thank you in advance for your answers,