Hi Troy,
The plan is to have a traditional "ladder" track leading into the barn. The track will continue past the barn through the woods into the parking lot. That will give us a place to put things out of the way, and provide a convenient location for loading/unloading from our trailer.
The car barn (and roundhouse) will accommodate all anticipated rolling stock needs of the museum - it's big enough to store 6 passenger coaches (we currently have 3) or 9 freight cars (we currently have 5.) I suppose it could be extended south a little bit if we needed to. We also have the whole NW corner of our lot in Sheepscot that could potentially be developed if the need arose. However, getting track to that corner could be tricky.