I moved to Seattle last summer from NYC and I cant even begin to tell you how great its been. Just do it, you have lots of flexibility and freedom, if you have to find a shit job to pay the rent until something permanent happens do it but by all means try to make the most of the summer. Winter isnt that big of a deal here but the weather is very different from the east coast so you do have times where things get ugly.
People in Seattle can be a little "stuffy" but if you traveled and it seems that you have, its no big deal.