Following this one with interest JB, just hope you get the liveries right........
Am not an authority by any means but the straight lines catch the eye a bit: looking at Ballynahinch Junction now makes me think I should have angled the running lines a bit in relation to the baseboard edges, even though the prototype was dead straight (until the point of divergence).
Love the culvert and bridge - I have a plan for something similar for my 'micro', plans for which are still simmering! Good luck with the build sir.