Some great answers already, chicken-hawk, in the off season(like now) I have similar approach. We use carb/kcal cycling and cut on a cruise period, so my cruises might be a little longer than most running DC just because we like to strip some of the fat.
There comes a point where the increase in fat has negative physiological effects, like insulin resistance, poor cardiovascular health, among others and the higher bodyfat is no longer any benefit in terms of gaining mass...there is a point of diminishing returns.
If your goal is to put on size, keep on adding and adding until you reach a point where fat accumulation is outside of your comfort zone and then cut back a few weeks to tighten up. You have to find the medium that allows you to not get too plump while still adding muscle as fast as you can.