Good catch, I should've seen that. Max, if you did accidentally order too little, call up Westlake and see if they can add it to your order. They're good people over there, and you should be able to get what you want.
To Zoysia,
Since he's going to be pulling this stuff through walls (and not paying a contractor to do it), the 10ga will be a bigger hassle due to its size and reduced flexibility. Seeing how 14ga is good for any "normal" run, he should go the route of least hassle. This is why I recommended the lower guage.