Hmm, the last 3 digits are 518, I'm not sure that's the size...
Based off what you say, here is my plan: Buy a pair of boots because I don't have any, but hold off on bindings. I don't want to put too much money into the board since I don't know how many times I'll be able to go in the next few seasons.
Any other suggestions on what to buy, or how to pick a good pair of boots?
This is all really helpful, by the way. Thanks a lot!