Hi there,
Cannot testify as to the conditions of the trails, but if you need help planning your trip, you can check Québec maritime's website: http://www.quebecmaritime.ca/en/sports-and-outdoor-recreation/snowmobiling. You'll find information about lodging, itineraries and general information about the destination!
Besides from infomotoneigistegaspesie.com, you can also check the fcmq website for trail conditions : http://www.fcmq.qc.ca/english/etat_sentiers.asp.
You'll find information on the trails, lodging possibilities, etc.
Hope to see you in Gaspésie this winter!