You're in for a treat Huck, the blood will get pumping long before you reach the outfitter because the locals (caribou) like to run the road ahead of you and slow you down! Nouchimi is about 100km (60miles) before where I stayed, but thats not bad because the migration has been moving west for a few years. One thing that bothers me is I thought the non-resident area started after km 300 or so of the Trans Taiga road, you may be staying in the resident only area and will have to drive east a bit before parking and getting out to hunt. As I understood it Mirage outfitters (luxary place with fine dining and snowmobile/helicopter rentals) was near the start of the non-res zone. I may be wrong, I'll look into it.
In the meantime check out the Other Areas forum, there is an informative thread about the Qubec Winter Caribou hunt there, I hope you have some time on your hands (its 120 pages long!)
We don't want to hijack the team thread so more info will come via PM.