So i am now alittle over 200 pounds, 6 foot, benching 240, feel strong...?

alittle over 200 pounds, 6 foot, benching 240, squatting 405, deadlifting 420. I feel very strong. But still when I look in the mirror im not happy i feel like unproportioned. Im going on vacation on august 1st. Id like to know if I stay very dedicated to a strict diet, and do alot of core and my regular lifting (more core workouts)... would i slim down? im looking to get to about 180... 190, although i really dont think weight matters. thanks (: