Two months is too short. For some people, two months is not enough time to gather all the identification documents required for a board member to grant them protection.
I, too, have accompanied a lot of people to the Immigration and Refugee Board, and the matter of the person's identity is of the utmost importance to the member. If the member is not convinced that the person before them is indeed Joe Smith, even though he may believe the claimant's story, even if all those elements are in place to give the claimant protection, the member cannot grant the person refugee status and will deny the claim. For some people, two months is much too short. I would worry that some people's claims would be denied because of that.
Therefore, I think 120 days is much more reasonable, especially given the current time frame of 18 months, even longer in some cases. So I think 120 days is reasonable.