At the time of the year you are heading up to Wylie, Rapala Shad Raps should be producing pretty well. (or any other brand thin tight wobbling crankbait) Be sure to have a them shad colored and fire tiger colored. The SR 7's and SR 5s do well. Another color to keep on hand is what the North Carolinians call Homer. Homer is basically a yellow bait with a blue back and a bit of orange on the belly.
Try to keep an eye on the weather in that area if you can. When it rains good up that way Wylie will get VERY muddy! Most of its banks are made of red clay so it becomes like strawberry quick. I havent been there in a long time but with the rains NC has been getting and will more than likely get before you arrive, expect it to be pretty muddy.
I wish I could give you more info but Im afraid, being as I havent fished it in a while, thats the best I can do for now. I will try to talk to a few of my buddies who fish it more regularly and see what they have to say about current conditions.