Given our router has started glitching out, and NBN has been delayed... again... i figure its time to start designing a new network layout that will work well in this rental, but also flexible for future places and NBN. Currently everything is running off a TP Link Archer C9, with the 5ghz band dedicated to AC, and the 2.4ghz serving N and G. The TPLink now regularly needs a reboot as it stops serving the 2.4ghz network, and sometimes stops routing entirely. DNS is currently handled by a PiHole instance on our NAS. Ideally i would like a few different networks. The first a 'public' N network for the home automation stuff (Xiaomi) and visitors. The second a 5ghz home network for all other devices, running at both N and AC. The third a 2.4ghz legacy network for a few test devices that are still N or G locked, such as our MFC printer. Plus i would like some way of being able to easily reconfigure for NBN when we finally get it, and have robust QoS metrics for traffic. Finally, i need to get wifi extended through several brick walls to the garage which houses devices that often have poor antennas (Raspberry Pis etc). I know that many wifi routers will happily do all of this together, but given the failure rate of domestic hardware (this C9 is barely 3 years old), im keen to do it via discrete functional hardware. Im thinking starting off with a PfSense machine hardwired to an older Draytek Vigor 120 that from memory goes into bridge mode. For non-public wifi Ill start with a single Ubiquiti AC Pro and see how that goes. But planning on adding an AC Lite for extra coverage via mesh to the garage. I think i can backbone off AC there and just serve N to the garage, given the limited devices there. Public wifi will probably be handled by a USB wifi card off the PfSense router. I may also shift the PiHole over to the PfSense machine, depending on overheads. Does this sound plausible, or am I better off just going and getting a commercial router again and running some aftermarket firmware like Tomato or similar?