Hi,
30m line of sight is a good rough estimate of distance. Outdoors you will likely see less RF interference from other transmitting devices.
Network setup is fairly straightforward, though you'll have to consider different scenario's such as pairing. There are a number of application notes you can refer to.
There is also a flood mesh example called "Scan and Forward" in the N5 Starter Kit SDK. We plan on releasing a new version with an interface that dramatically simplifies the process of using it for developers within the next few weeks.
Best regards,
Harrison