Billboard, 2 postcards, and Brochure Design

We are a USA marketing agency and am looking for someone to quickly build us 4 pieces in photoshop. 1. Billboard - Roughly 35x10 feet. I have template and specs and need someone to build out the design we are asking for. Pretty simple text and phone number along iwth a DVD cover. 2. Two 4x6 postcards - We have text and need the design work done on these. 3. One Brochure - We have text, logo, and images and need it laid out nice on a brochure. We have the template. Will need to get client's feedback on the work, so expect to go back and forth with changes a little bit. Thanks for looking, M