That's exactly what I'm trying to do. I'm actually waiting for the next double xp weekend to play again - If I recall correctly I'm Prestige 9 level 44 - double xp would put me deep into 10th prestige or maybe I could even hit PM.
Probably DLC weekend and that should be sometime around april, wouldnt surprise me if it was 4.20 weekend Seeing as though it would be ironic, COD being a stoner game or sorts, and it being the middle of April. Just fits.
Given how fast reaction times are needed in this game, smoking weed would be counterproductive playing this game. You'd need amphetamines, caffeinie tablets, energy drinks, cola etc. if anything to take playing this game.