Yeah, your taking a little risk, by just trying to find a spot to camp. Naches is a fun trail, you'll have a blast. It's one of my favorites. If you can't find a place to camp, I do have some lodging options in the nearby area. What time are you leaving Bellingham, for greenwater? I might head up thursday night, if your thinking your going to get to FS70 around 10pm. That would be about the same time as me, if I leave from work at 6pm.

Keith
"AIR AMIGO!" aka 1994 Isuzu Amigo SAS with Toyota axles, 5.29's, dual ARB's, IROK's, WARN HS9500 winch, and etc.
Pacific NW Isuzu Off-Roaders
Timber Tamers #172