Mike, sorry, but I found that yard configuration is not going to work. I explained why there, so I won't go into here. I posted an alternative in your other thread, one pretty close to something I had posted much earlier. Maybe Carl can come up with something if he gets a chance to take a look at it.
As for wiring, I'm also curious. Like Mark, I pretty much know what Barry's book says when it comes to 10' and 12-13 joints, but I'm a little light on wiring switches, especially for crossovers. Hopefully someone else will chime in with some ideas.
