Proof Template

Was wondering if it would be possible to create a Script that would take a Selection or image and re-size it proportionally into an 11"w x 8.5" H document and place it Centered in a 10.5" x 6" box located at the top of the page. If possible if it can detect the size as being less than 10.5" x 6" then don't scale, but if larger scale down to fit Proportionately.... Then Provide a dialog box that would let me enter my job # and today's date in a pre-determined location. I've attached a sample of what I'm trying to accomplish for the finished look. I'm also Assuming the base elements will need to reference a file (or template) that would contain the proofing information if so we'll call it "Proof_Temp.ai"

Huge thanks in advance for anyone that can assist...