We will be riding Saturday & Sunday for sure, with the possibility of a short ride Friday (depending on how early we get in) and maybe even Monday (if Karl decides to spend his day off there, I have to be at work Monday most likely).
No MX tracks that I know of up there. Airway Heights has a track just outside of Spokane, that's about 2 hours from the LPO area. The dirt is great, with some areas of clay, some areas of decomposed granite, and some rocky sections. It can be slippery if it rains which is likely this time of year. It also gets dusty if it doesn't rain, also likely this time of year! It is almost all pretty tight singletrack woods with some fairly technical sections, rocks, root & such and some nice faster sections to loosen up in.
Where we camp there are no amenities except an outhouse but the Beaver Lodge has a store, gas and cabins for rent. You can also shower for a couple bucks at the Lodge. There are several smaller lakes nearby. The Lodge is actually on the shore of Lake Gillette. There are also a couple Forest Service campgrounds at Lake Gillette and they have an RV dump station there. We avoid the FS campgrounds because they make us push our bikes on their roadways and the camp hosts tend to be jerks, so we hit the WA DNR campsites instead with direct access to the trailheads and a small area for the little ones to ride around while we relax at camp.
Here is a map of the area, click on the number 23 Little Pend Oreille (Pond O'ray) for a description & enlargement of the area. LPO also ties into Batey Bould which is a bit more difficult trails.
http://www.nmaoffroad.org/orvguide/mapne2.htm
Here's the info for Beaver Lodge:
Beaver Lodge Resort & Campground
2430 Highway 20 COLVILLE, WA 99114-9011
(509) 684-5657