So I'm 4 months into my gaining. Currently 5'10'' 156lbs. I started at 130lbs. My question mainly is this; before I began gaining I had a bit of a skinny sixpack. Since I've put on the 20 lbs, that has turned more into a solid belly. Still ridiculosuly low BF, but I lost some definition there. I plan to go to about 170lbs. At that point when I want to get definition back in my abs, will I have to cut?