Hmmm... Maybe you are going overboard having a cheat DAY, cut it down to a 3 hour window OR do what Swolle said, which is essentially a medium size carb up 2x a week, a strategy I have used to great success as well.
Since you haven't really given me the info I requested its tough for me to offer any good advice... But it seems like you could benefit from adding in some cardio at this point. I dont know what your fasted walking schedule is like, but adding in 16-20 minutes of intense cardio after your lifting session would be a good place to start. try 3-4 sessions a week and see where that gets you. If you have the time, I like to separate my cardio from my weights, but that's a luxury.
I dont know what your ultimate goals are, but basically its not going to get any easier from here on out. Thats why very few people have exceptional physiques. You will likely be eating less than you want, working out more, and doing more and more cardio from here on out.
Also, and take no offense to this, you are not very muscular. You're dieted down physique will be unimpressive I'm afraid. If I had to hazard a guess I would say you have an honest 15-20 pounds (maybe more) to lose before you are even coming close to having visible abs. We all have different goals, and I can respect it if your goal is simply to be lean... But if your goal is to be lean AND muscular, you have many years of hard work ahead of you.
If you want to see what it takes, go read The Might Stu and Synergy's threads on their contest preps. This will take hours but the knowledge you gain from it will last a lifetime. This will show you the kind of effort it takes to get really lean, while being quite muscular. Notice how much those guys weigh in their dieted state and compare their muscle mass to yours.