Pretty much decided on setting camp up in my normal area near the Kalama Headwaters.
Gonna be a bunch of driving to get myself and kiddos into the Margaret, but oh well. 
A bunch of two hours one way worth of driving. Seems as though there are some campsites around silver lake that would be quite a bit closer.
Cowlitz County's new Harry Gardner Park on the South Toutle River is pretty much empty right now. Kid Valley might have a spot, also.
None of the other Vets coming from out of state have cow tags for the Margaret. The 2 that are returning/have been to camp before are familiar with the headwaters area.
My son and daughter are only at camp for the weekends. Both are in high school and can't miss a bunch of classes.
I figure the Margaret is going to be a pumpkin patch anyway, so will just take my kids on some day trips into there.