Mesh to router is when you want to use the mesh as an AP only, and mesh to modem is when you want to use mesh as your router and AP. You can use mesh or change to the C2300 or C3150. That would be enough if you only have a single storey house.

That’s my own personal recommendation. I used to have the C7 and I am currently using the C3150, with the C2300 in my in-laws house. Both C2300 and C3150 definitely have better coverage than the C7. I do not just recommend things that I do not believe in. Please do not accuse me of being bias. blacktubi and Jjuggler who both have their own tech blogs and often test routers can back my claims.

This is a website that compares router coverage and you can see for yourself: https://analiti.com/compare/tp-link-archer-...link-archer-c7/

Concept-wise, it sounds feasible. However, powerline is notoriously unreliable, as it can be affected by any fluctuations in the electrical lines. I wouldn't recommend it when there are better options such as mesh wifi, or a decent router with good wireless coverage.

Nah, I’m good, bro. I understand what you are saying. I am just suggesting a cheaper alternative to mesh WiFi which can get pricey, if you need to get more nodes. I am definitely not implying that C2300 or C3150 can solve all the problems of WiFi. It will take more than that, for sure.