Typical "Cascade Cement" wet snow can be tough even for experienced snow drivers,as the tendancy is to hydroplane.Wouldnt hurt to throw some sand bags or some large rounds of doug fir into the back of the truck.
If your familiar with the area,think about where you want to go before you get there(downgrades,corners,pull outs ditchlines etc.,)
Not to many Pnwers up here,I used to fish with quite a few,almost to a man they couldnt wait to get back to washington.And a small handfull was from Astoria area.
ak