For discussion purposes, here are what I see as some wiring options:
I suspect you can get away with this, but I can't guarantee you won't run into DCS problems without separating the layout into blocks and adding power drops to each block. Notice the toggle switches are missing.
Here are the toggle switches added.
Here's another option with more power drops, but no block insulators. Again, I can't guarantee you won't have DCS issues. I think RTR12 might be able to comment on that because I believe he ran into issues before he added the blocks.
Here's a repost of the full breakdown I posted earlier. You can try adding the 1 3/8" "kill switch" tracks John mentioned, but you'd have to change where the blocks break so each crossover is in the same block or adding the short tracks between them will cause fitment issues.