You are welcome.
It doesn’t really require any reboot. Just execute the mount command both in the ZS shell and in the pre-boot script. If you are configuring your home router, rebooting is certainly a good way of testing that the pre-boot scripts are really working (or if you can afford doing this in a produciton router of your organization – in a maintenance window, maybe…).
I’m happy it is working for you now. Enjoy your new “boosted speed” proxy.