That could easily become an investment of $4-5K let along a whole crapload of time you don't have...
Hopefully purchased over a period of time on the first concern, and that's what Gandy Dancers are for on the second! Besides, I don't mind giving the money to guys like Bernie, DKS, and Bob.
Any thought to just having a few representative signals or just do mainline block occupancy versus routing?
Nope.
Don't get me wrong, 100 working PLs would be downright pornographic...but perhaps too tall an order.
Pornographic is what I'm going for! More specifically, functional signaling was one of the design criteria of my layout from the beginning. It is a tall order, but worth it in the end. Also, keep in mind 100 was a ballpark figure. I think the actual number that I need is less than that.