I am working on my RC skills but as all of you know time is

I am working on my RC skills but as all of you know time is a major constraint when it comes to RC. So i was actually planning on the following strategy but not quite sure if this would work.Request your take on this:

1.Finishing the two short RC passages thoroughly(ofcourse not taking more than 6-7 min)
2.Spend more time on the first long RC(this takes 10-12 min for me now in case of 4 questions..trying to improve!)
3.Guessing heavily for the second long RC incase u meet one in the exam. [Ofcourse not the question dealing with the primary purpose(am assuming this is easier) the rest of the 2-3 questions which come along(inference,other specific questions)]

But am not quite sure if this will impact my test score. Request your thoughts.
Thanks.