You will find that even a top end AC router will not work for two reasons: (1) few of the clients will have 3x3 MIMO adapters and (2) the 5GHz signal will not penetrate building materials well.
I would suggest that if you really want the signal to work place a decent router (soemthing like an ASUS RT-56U) in a central indoor location and add a couple of Ubiquiti omnidirectional outdoor wireless access points. Depending on your exact layout you can get by with two or three. Each will require an Ethernet cable (I would recommend the CAT5e that can be buried) and you should consider PoE injectors if there is no power where the APs will sit.
If you would rather use a directional AP to get a signal from one point to another and then broadcast your network signal in that area, the perfect solution is the Ubiquiti M2 AirGrids. They are inexpensive and simply need line of site from one to the next, both include all needed parts including PoE injectors. Take a look at the picture labeled "View Point to Point Wireless Installation Diagram Below" at
HERE NEAR PAGE BOTTOM. You don't want to buy their equipment, it is just a nice picture to show you all the parts of a set of outdoor directional APs.