white shoes in October?

Aagh, I found out today that I needed to have a pair of white shoes for my sister's wedding on the 14th. Where am I supposed to find white shoes, in October, in New England? Fortunately, eBay and Amazon came to the rescue. Thank God for the Internet!

So it's between these two pairs, the one above and the one below. Now that I think about it, I don't think I can manage 3-inch spike heels, not having any previous experience with something that precarious! Plus, standing on the balls of my feet for that long? Sounds like a mistake.