Hi Mike & Christie. We didn't worry too much about it. In fact, we intentionally left bulky stuff at home and bought new after we picked up our trailer in September. Fred Meyer stores sell everything (including pillows, "Sealy" brand; and Ross had a couple good deals: a pair of throw pillows for $19 and a set of scatter rugs for $10). We did take sheets because they can be expensive; and a couple of blankets. We used paper plates, etc. and took a minimum of cooking utensils and flatware... We were concerned more about having too much stuff with us for the trip up, feeling we needed to not leave things in the pickup in motel parking lots overnight. So, we packed everything into 3 large totes (took our own bath towels, but bought new dish rags and dish towels) to facilitate the unloading and loading. From Austin, it took us 5 days to get there - not counting a couple extra days we spent visiting family and friends. We could've done it in four, as one day included a drive around Mt. Rainier and lunch at a friend's restaurant in Seattle...
I can tell you the whole trip was LOTS of fun. I hope yours is for you also!