LOL. That would have been a good idea, if I had any control over the situation. My girl picked out her rings, gave me a deadline of when I needed to propose by, and then just casually mentioned when and where would be a perfect time. I had actually planned that time and place anyway, but it certainly took any remaining element of surprise out of it.
I guess that's what happens when you just impulsively sit at a pizza place together one night and start talking about the future and ended up making one of those pro/con charts on whether we should get married on a greasy napkin...our courtship was just all magic!