I remember seeing a time table at one point as well. I searched, but was unable to find it. I will keep looking .
1.) The orange blossom express can work, depending on the transit times. I can see people commuting all the way from Lake County to our CBD. Let's hope the sunrail will act as a boon to grow our downtown even further and hopefully see a small manhattanization.
2. & 3.) As far as the other two I cannot comment because I know to little about.
Do you think that the train will boost Sanford International Airport being that it is not as crowded at MCO?