I have the most unstable internet connection and cell phone reception on my property.  Any suggestions as to how to fix this?  My "business" clients really needs this feature.

Well the high speed interent with cable is far better and fast than Wi-Fi interent. Wi-Fi net best where we requrire more than two users and they want to use it from their own bed room but Wi-Fi doesn't give as much speed like cable high speed interent.

Unless you have faster service than 100 mbit ethernet coming into your house you won't see any real difference between using ethernet or WiFi.  Cable companies charge an arm and a leg for 50 mbit Internet service and some newer WiFi dual channel 5MHz is capable of 400mbit ethernet, way more than the cable company will provide.