I am thinking about getting an AC68U or P to add to my AiMesh. How far can a person put the node so it is still a viable and powerful enough router. I have my main router in the basement, wired to a 68U upstairs as part of a node to my AiMesh. The other node will be in my garage and it will be about 60' away through 2 walls. Is that too far. The wife signal test 10' away from the router is -45dBm and while in the garage it is -67dBm. Is that too weak and too far away to work?