The tire shop will take care of the TPMS stuff, so you shouldn't have to worry about it. Plus, it's a bolt on and off kind of deal. Easy.
I, personally, haven't heard much about the Liquid Metal brand. It appears to be just another powdercoated cast aluminum wheel. Since Discount has them on their site, and they more than likely sell them in their stores, they should be of decent quality.
And the Falkens are a pretty decent all season tire, too. I was thinking about running those, but I opted for the Toyo Proxes 4's.