See if you can take off at 275,000 gross at the recommended VR speed (137) with anything less than 2.0 EPR.  I don't know that trying to fly exactly by the numbers is going to be a satisfying experience, but I'm open to persuasion.  Not that I care; I think there are other things to enjoy with this aircraft.  I'm just saying it might be frustrating.  What do you think?