I'd write letter to the editor of your largest papers explaining how the transit company should make provisions for bicycles and help slow Global Warming and blah, blah, blah.... you get the idea.

You could also get a 7.2 FX for the same cost as the 7100 bikes. Well - a little higher. Unless you prefer a more sedate ride with bigger tires while towing the kids. In either event, it looks like you're on track just fine. Any of the Trek bikes have good re-sale values, as long as they are well maintained of course.