A hosted office of AC would be a disaster. Sorry.
The best way to run AC at two offices is to use a Terminal Server period. It would help to have a good server for the program and a decent computer running Terminal Server. In this way, multiple users could use AC from the remote office at the same time running the application on the Terminal Server from your server.
I wouldn't try VPN, VNC, LMI, GTMP or any other. This is pretty much the best way to go.
Once you decide to go this way, hire someone to set it up. It's not that difficult, but there are the minor issues that you may not be familiar with.
There is a saying that many do not heed on here:
If you want to make money, do what you do best, and everything you don't know, you should leave to the rest.
I have a guy who helps me who has 30 years of network experience where setting that up and giving advice would be like installing AVG to you.
