Using b315 for lte (on a plot so all that works is lte) and have a couple of TPLink Powerline AV600 Ethernet over power kits around the house.
B315 is in study so gives front of the house, most of my front garden and my garage decent wifi (I have a pc in there and also use my phone in there) It is on channel 1.
My neighbour's wifi is on Channel 6.
The AV600 Wi-fi is plugged in under my main lounge tv. That gives the rest of the house and yard coverage, Also means my firetv cube and the tv are plugged into CAT. it is on Channel 11.
Other 2 extenders are used for my 3d printer's pc and for my plex server.