Well when you download a game it typically comes patched up to the most recent patch. (that can be different with pservers though). The game is 4.9gb = 5017mb. plus v49 which brought it up to 5,257mb total = 5.1gb.
Each patch is roughly around 25mb. And there has been what, about 1-2 patches since v49? So were still under 5.5gb.
Were actually still at 5.1gb technically
Not trying to be a "know it all nancy" but with the amount of space i have on the computer i'm currently running EPW on, i'm always worried about file sizes.
Oh and if patches are taking a while to download through the patcher, maybe consider your internet speed.
This will help with determining your internet speed if you dont know what you are paying for monthly.
speedtest.net