I love TP-Link's products, and I use them all the time, particularly their awesome travel routers that cost about as much.

My suggestion was for a router that might get through the concrete without drilling a hole and mounting something on the ceiling, while also offering 802.11ac and leapfrogging n altogether. But that might not be necessary.

The advantage to the Unifi product is that it's PoE, which will simplify things.