But he lives in Seattle.

You can't go to anything but Starbucks, especially if you're a teen, which I think he is...right?
My kids hang out at Starbucks with their friends, doing homework and drinking coffee together.
My personal faves at Starbucks are the Breakfast Blend, House Blend, Light Note Blend, the new Pike Place Roast (if you like it a little bolder), and at Christmas time the Christmas Blend.
You can also get decaf-nonfat (or soy)-lattes for very little carbs.
Go to their website and they have a nutrition guide, where you can customize your drink there (for lattes, mochas, iced drinks, etc.), as well as a pdf specifically for the pastries at the store you go to.