Just checking your math skills.... ha
I absolutely love when I f* up simple math and then post it on the internet. Awesome.
They only have whole size options, no 1/2 sizes. I think a whole size is going to be just about right, maybe a little big, but that can be mitigated easy enough with a thick sock. I think I'm going to forgo the good deal and go to Confluence (which also said they would offer up a deal this time of year), and try them on with the drysuit bootie.