As you can see, I have fitted the previous board to the new one. There is a discrepancy of height between them. The new addition is set higher than the main board as there will be two levels on the track and by starting in the middle, I can make the resulting grades less than if I had everything starting at the lower level.
The existing of scene staging is a board 3' x 8". This will be added along the front of the main board. This will give me a proper end to end option rather than an out-and-back style.