Creatine will salvage your strength while cutting. I def recommend it, 5g preworkout, 5g postworkout, 5g later on in the day if necessary. I've never used Glutamine, but too many people say it's a waste of money, and I have yet to see a study where Glutamine was used on healthy athletes (they are usually done on people in the hospital suffering from burns, etc). Throw in a fat burner towards the end to get rid of the stubborn layers of fat ... keep protein intake as high as possible to keep the muscle. Good luck bro