Summer wedding ideas?

We've set the date - 6/26/11. Sunday afternoon in my parent's church, reception to follow at my parent's house. Not getting a dj, a limo, a caterer, or a wedding planner. It's going to be very simple and cute. I've picked Lavender and White as the colors. Hamburgers and hot dogs at the reception, a double layer 8'' round wedding cake and tons and tons of cupcakes. But...that's all about as far as I've gotten. I've got less than 4 months to plan my wedding and I want to keep it on a pretty small budget so any advice or tips you have would be much appreciated!! Thanks!