reply to bmn
Re: 400-700 feet is not enough.... Mesh networks aren't typically limited by the range of the mesh APs. They're more limited by the range of the clients, unless you're just talking about backhaul ranges between the APs.
Typically, the purpose of a mesh network is to provide Internet or private network access to wireless clients. If the clients can't connect, it won't matter what the range is of the APs. Wi-Fi requires connectivity on both sides of the connection. If one side can't provide a decent connection, neither side is going to do much in the way of communication.
That being said, it's important for mesh APs to be able to communicate, but not at the expense of stranding the clients. Most embedded-antenna Wi-Fi clients (like you'd find in a laptop) are going to have problems maintaining connections past 150 feet or so, especially inside a building.