Originally Posted by
InvisibleRider
2) slacks/pants with chamois <-- but what is chamois ?
A chamois ("shammy") is the padded lining in the crotch area of most cycling shorts. It provides a bit of cushion and reduces chafing. Some do come with gel padding but I think most people find the gel to be too bulky and generally uncomfortable.
Personally I try to ride at least once a week throughout the whole year. If you want to ride in the winter in Seattle you'll need some clothing and accessories to cope with the temperatures and perhaps the rain, if you so choose. So some other things you might consider getting are some midweight gloves, some sort of skull cap which covers the ears, and some fenders.
Oh, and congrats on the new bike Enjoy it!