It's hard to recommend what you should change without knowing more specifically what you're doing now.
How many calories do you eat in a day? What kinds of things are you eating?
What does your current workout look like, including sets and reps? How long have you been doing your current workout?
Btw, at 5'8 and 160lbs, you probably don't need to worry too much about cutting weight, at least not if your goal is to build strength right now. Also, you can drop the NO2 and glutamine. If you search the articles on this site, you'll find that neither is effective.