Matt,
I just wanted to drop you a note regarding your wife, you and your children. My husband was diagnosed with bulbar ALS in August 2007 they said he had 18 months to 2years. Well he is still going and just finished/retired from teaching this year with a voice for 2 years. As some of the posts stated not everyone is the same so go into this with as much of a positive attitude as possible as it helps get you through the days and the kids feed off you and your wife generally. My kids have learned to deal very well when you are honest with them they are 14, 12, and 9.
Not sure which ALS CLinic you are getting into but if it is Syracuse we go there and they are wonderful. Dr. Shefner is a very compassionate doctor but very honest as well listens well and explains things well. His ALS Clinic staff is amazing as well and the support staff (ie: ALS Assoc, PT, OT social worker) are terrific.