Hi Simon,
I don't think I have seen the whole plan before, plenty of play value.
One question is, is option 1 going to be long enough? If so why not bring the cross over back on the level. As I am not sure what purpose it serves where it is. This would mean lifting it which could be a pain as you have ballasted it.
Does the loco have to run out to that line? Could it just run round and go wrong line to the yard? Just a thought, let me know what you think.
Cheers Peter.