It's interesting that so many people are picking option 2. I think that the rivalry between the two is magnified in the frothy arguments on this site. There's no doubt that Federer would like to get the monkey off his back on the biggest stage but I still believe that it's probably not as big an issue for him as many people who repeatedly post "H2H!" believe it to be. Just because I think that with a cool head and a view to History he would choose the two majors and not give a crap if he beat a limping Radek Stepanek to get there.
“There is no best. There is just the discussion of who is best. Federer, he will always be in the first part of such a discussion.” Rino Tommasi