Brian,
Just a thought, but with so many wireless companies offering unlimited data plans, why not just buy the regular S3 ad use your phone as a hotspot? I used to have a Samsung Galaxy tablet with LTE, but I found that there was WiFi in so many places I rarely used the data plan. So, why pay more than you have to? Of course, I could just be talking crazy here, and you might have a great reason to need it, like being on the phone at the same time or something.
Just my $.02.