I agree with kabeetz. If you are at 7.5% bodyfat that is probably your problem - you can't really be bulking for muscle mass and need to eat more. Your goal should be to get stronger at compound lifts while slowly getting fatter. If that is the case, then you are in a caloric excess. If not, you aren't eating enough.
I find ANPB, steak (and other read meats), milk, breads, etc. are the types of foods that help me get my calories up. Chicken, tuna, rolled oats, etc. are the types of foods that help me keep my calories down while feeling full.