Like the track plan. Congrats on having a nice space.
To add to what was said above about closing in the ceiling to prevent dust - now is the time to make sure that the ducts are well-sealed. Verify that all of the wiring and pipes are in good shape - especially water pipes. Add any junction boxes and/or outlets in the ceiling for future use. Looking at the 3-D representation, it's difficult to tell if there is sufficient space for servicing / replacing the water heater or furnace - don't just look at the current size of the item - consider how they will be hand-trucked in and out.
And since it's Chicago to South Bend, be sure to include a South Shore line.
