Slightly jealous crawdaddy, what an awesome time of year to be out in the Mojave, on a new ride no less. The rear mt43 looks perfect for those conditions.
I geared mine down to 14/48 with 2 extra chain links so the axle blocks would be neutral. Good mixed use compromise gearing.
'12 KTM 350EXC, '09 Yamaha WR250R