Find a diet and stick to it. I would think you have enough time to cut using laynes precontest diet, its easy to follow and he has done almost all of the work for you. You can find that
here
Follow the diet to the T even the refeed days... read it and reread it until you understand it. If you stumble across something you dont understand ask it here. If you have another diet you want to follow tell us which one and people can give you their opinion on it and pointers.