Any of the Ranger Stations can provide you with a Map.
Most of the trails in that area are marked with difficulty Level. It can really be misleading at times. (mostly the "easy" trails are harder than they say due to people taking them too lightly)
Best Bet this weekend, hook up with a group. You really won't be out there alone, but you don't want to venture out without a few rigs in your own group. Find some like wheelers and tag along.
Or you can hook up with Clay (Ceg on this board). He is heading a group up this weekend and they always have a good time.
I've found the Naches area a little boring, now with snow the area gets really fun. Naches has also become more like highways over the years but I also can't play on a couple of rocks all weekend either.
If givin the choice, I'll take RR, much more challenging plus there doesn't seem to be as many people on the trail.