Much Needed Help In Dressing For A Wedding.

Please can anyone help. I`m a 6`2, 240lbs.latino male and i am terrible at putting suits together. I have one black suit in my closet with two shirts , one is whjte the other is lavender. I`ve been invited to an October wedding and I would like to know what color suit to wear with what shirt, tie and hot shoes aswell. Basically I would like to look great for the wedding, so hot the woman will druel(LOL). Is there anyone that can help me...