trans taiga a pretty cool ride.
make sure you have the fuel situation worked out. 645km out and back to chisasabi from mirage. i got fuel at air saguanay, but they're not always open. mirage down to relais 381 is about 410km. you might get a splash of fuel at the cree outfitter, but they're not always open either. likewise, radisson to mirage is a hike. plan accordingly.
watch out for the soft sections in that road. i call them sand holes, and while found on almost all the northern gravel, there were plenty on the TT road last season when i rode it. some short, and some that went for 200m. these sections have put plenty of bikes down, beware.