I'm yet to see an extended parking cable, so you may have to get ninja with that (moving the parking brake elsewhere).
My suggestion would be to buy a 120link chain and cut it down to what you need vs trying to find a specific / perfect length one. Way eaiser
If you ride mostly sand, I know duners opt for the non-oring chains. I still always prefered the X ring chains.
I'd have to do some looking, but I believe the +4 line is actually a bit longer than what you need. But I can't remember 100% for sure.