I'm looking at SportKilts... but I'm a size 38-40. That puts me at the high end of LARGE and bottom end of XLARGE. Should I go bigger with a belt?

As for shoes, my buddy wears Cleats and told me to do the same. I'll look into Hose as well. I know my wife is freaking about the price of the Kilt right now (since I also just lost my handmade Celtic Wedding ring).

For shirts... We where the Scottish Heavy Weights Shirt provided for the games.