If you can afford to, why not set aside 1300$ as a budget to completely revamp your wardrobe?
Express has a buy 1 get 1 half off on their 1mx selections, stay away from the gaudy loud colors, keep it toned down, whites are important, go to Jcrew invest in at least two pairs of ludlow pants, you won't regret this, you can purchase the matching jackets later....get Navy and Charcoal to start off, that will run you about 700$ say six shirts 2 pants, invest in some Cole Haans, you can get a vet decent pair for 200$ get a dark brown pair and a black pair, that's about 1100$ then get a couple of ties off the Jcrew Factory online, you can get them for like 15$ each, a reversible belt from express and take the pants to get nicely tailored to your specs and you can rotate these clothes for a while, these can be your foundation, if all your shirts fit you like the above posted, is time to donate those bro....a mistake big guys make is buying clothes that for them big....like you are already big, don't give off te illusion to look bigger than you are, guaranteed you get your pants and shirt to fit you right, you'll look 25lbs lighter.