Best Wifi solution to use with an ethernet backhaul (3 floors, 1000 sqft each)

Hello everyone, Mexico saying Hi!

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My house is made of concrete, which blocks significant wifi signals. I have 3 floors, with around 1000 sqft each.

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* First floor is kitchen and living room * Second floor is Entertainment / bedrooms * Third floor is studio/office

I have wired ethernet into all 3 floors, so I can connect any AP in them.

What would be the best solution to provide full wifi coverage?

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My current idea is to buy 3 Ubiquiti AC lite, and connect them to the modem ports (Modem has 4 ports). Hopefully I can find a better idea, as I'm not fully sold on that one.

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Thanks for your help!

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