Hi Steve,
Ethernet would be ideal for buisness needs. It allows the printer to be on the network still and multiple computers to connect to it with ease.
The only reason I mentioned either is to test and see if we can get the printer installed and connected at all. It appears with that page passing it's on your network but it's not installating wirelessly on to the computer. You could attempt installing it on another computer first, prior to making any changes for a wired connection. If that works, then it gives me more to work with as well. As it would indicate something specific to the current computer.