Roger,
One of the keys is low latency. If you are using a satellite internet
to connect, it is not likely to work well. Direct Wi-Fi or direct
internet access with Ping times less than 250 MS are prefered.
The lower the better.
Because you will be multiplexing speech and control signals over the
internet connection, you will need moderate bandwidth say 56k bits up.
If you are doing CW, you may need to make certain that characters are
not kept in buffers too long.
I have a US friend who uses a remote in Portugal and another in
Vermont. So it can be done.
Don't forget switching equipment on and off and grounding everything.
Remoterig points to some additional equipment that can be helpful.
Good luck!
73,
Ed Feustel, N5EI