The TP link is great at that price point. Pretty hard to beat it for ease and performance sub 250.
In a perfect world you would have a node on each level but from a cost standpoint you might be able to get away with a single router solution like the TP Link archer C9
https://www.amazon.ca/dp/B00PDLRHFW/..._mfFOBb7KVCHEM which is a great performing and high rated router for sub 100.