your gains will slow down as you get more advanced, it just happens. It will also get to the point where more food isn't going to automatically equal more muscle. But that is years and years down the road...
Do yourself a favor and forget you ever heard the terms Bulk and Cut.
Pick a goal, relatively short term, and eat in accordance to that goal. So if your goal is to get more muscle and get stronger, eat more food, if it is to lose fat and look leaner, eat less.
Learn how your body responds to different foods and stimulus. Once you hit that goal, re-asses where you are at and make a new goal. (If your goal is to be a jacked up swole beast, expect it to take a while.)
Now don't be a total dumbass and live off of waffles and ice cream. Eat like a sensible person would. This also means, don't eat like a dieting bodybuilder 24/7. Be reasonable and smart about it, and eat foods you are comfortable with, but don't gorge on chips candy and coke diesel. You see what I'm getting at? Don't be super strict and hold yourself back, but don't be too loose and fuck up your body comp at the same time. This will take trial and error on your part.
Focus on getting stronger in all lifts, and try and give all muscle groups attention. Follow the 80/20 rule. You want to focus 80% of your effort on the 20% that really matters. You will also get 80% of your results from the 20% that matters.