Calypso is the closest to Food Court and bus stop, but it costs more now. The downside (other than the cost, which IMHO is not worth the extra $) is it's poolside, so a bit noisier (though I've stayed in this building poolside and never heard anything significant). If silence matters, request a room on the back side of Calypso.
If you don't pay for the Calypso location, I'd go with Jazz for convenience; choose Broadway or Rock Inn if either of those styles of music particularly appeal to you. You may wish to avoid Country Fair simply because it's as far as possible away from Melody Hall and the buses. All the other All-Star rooms are the same price; few have a really direct parking lot view (it's frequently in the background, however, the view is often partially blocked by landscaping). The better views are on the front of each building. Again, I'd suggest Jazz unless you really like Rock or Broadway musical styles.
Have a great trip.