Is it a Pogo ride?
It think the best description is a "Dual sport" ride
Provided we don't get to much rain over the next few days it should be quite rideable on a GS, but it will be more enoyable on something a little smaller.
Out and out enduro bikes aren't perfect either, unless you have very plush suspension and a comfy seat , but i'll try and tailor the route on the day depending on conditions/group size/ability ect.
Sunday showed the 'plain to be incredibly dusty, so i'm planning on keeping us down amongst the trees for most of it, where it will be cooler to ride and should have clearer visability.
That said the return leg will cover some of the better routes on the 'plain.
I might even find a ford to cross
Nathan