Let's start with the size issue. Generally, you'll be in the medium range. However, sizing will be different between brands and models. Also, the sizing might be different within a brand amongst the various lines as well. For example, Ride has several series of bindings. What might require a small size in one series, might require a medium in another. Always check the manufacturer's sizing chart.
Now, I'll talk about the difference between male and female bindings. Can you use a male binding? Certainly. But you'll be more comfortable in a female specific one. Females have lower calf muscles therefore your bindings will have lower highbacks. Also, female bindings run softer than their male counterparts. The flex is easy to compensate for, but the high back height is not.
Get yourself female bindings. You'll be more comfortable.
Last edited by Leo; 05-27-2010 at 01:06 PM.