If your with expierenced and built rigs you should be fine. Stay away from busy though. It's a tight trial and even built rigs have backed it up. Beyond that have fun, best trials in the NW IMO. Hell Elbe is the only place where I have had to use my winch and had to be towed back to camp...
Not sure if they are done. Lower mainline is a dead ends after bridge (pretty much entire trail is nonexistent) Can't run all trails up, have to drive up the new logging road to get to the upper trails.
I like 9 at the main lot. I may take the kid but that means putting the back seat in.... lol sounds like a lot of work. So probably just have the Ms. ride shotgun.