I worked at that place 3 or four winters as a pilot. 80% of the hunters kill their 2 caribous the first day on the road
In the worst case I've seen,the hunters needed to drive 2 hours to find the caribous but most of the time you could shoot them from the parking lot
When I was there there was the possibility to rent snowmobiles from some really good guys that have a shop at Mirage's. I think it's the cheapest, most fun and efficient way to hunt if the caribous are far away. Also, rent the smallest ones they have, they are the best!
Some people pay 1000$ to go hunt with the helicopter, but kill their caribous the first day, and don't want to use the flight they paid for... you can always try to buy their flight for cheap and have a great view of the place

(and the pilot will be happy to work a little!)
I'm leaving nov 23rd and will fly close by. I'll let you know if there are many caribous in the area if I can find an internet access. Last time I was there I only saw 3 caribous, but that was 3 weeks ago, and about 50 miles south. Don't worry, I'm sure you'll see plenty!
Have fun!