the Stanford Center for Entrepreneurial Studies (CES) doesn't have a business plan competition, nor any special events. There is an Engineering-Business joint business plan competition, and a lot of events set up by the Entrepreneur Association. For some reason, the more I find out about Stanford's Entrep programs, the more disappointed I am. But oh well, I'll still be extremely delighted if I get in.
Also asked about the margins, and they said "use your judgment". I hope 0.5" is acceptable around the edges...