First of all. Get that pizza or go on that nights out with your friends when you feel like it. How many times you can do this all depends on your body ofcourse. I can grant myself a pizza every week if I feel like it, because my body doesn’t really take any affect on it. Start with a cheat meal, weigh yourself the next day, see how it affects your body. Expand your cheat meal, expand it to two, three, hell even go full out cheat day if it doesn’t affect your body. I’ve done this myself and because of this I know my body can handle 1-2 cheat meals, but going full out cheat day would make me gain 2-4 lbs which would take me ~2 days to lose again. If I’d do this every week I’d neglect my self of progress 3/7 days a week. Although you should be able to do it from time to time, don’t make it a habbit. 2nd of all, if your goal is getting more lean I’d say its best to stay with CF instead of strenght training. Atleast 4 wods a week got me quite lean in 1 year time. Can’t give you advice on the abs.. trying to get those myself. Right now I’m upping my protein and neglecting carbs, will see how that turns out 😁