Seperate lans on AR750S-ext Slate?

Will these instructions work with an AR750S-EXT Slate?

Thanks in advance

as far as adding a new network it may interfere with gl-networking scripts but I’m pretty sure assigning one of the extra lan ports on the slate to the guest network should doable without a hiccup.

Surely you can do this. Do not touch the current lan settings. You can move one LAN port to your lan2.