terminal services remote office

I need to setup a remote office with terminals so they connect and are validated by our Windows Terminal Servers at the main office.

It will be an office of up to 5 users.
I’ll need:
– a good Internet connection.
– 1-5 thin clients (per user)
– a router and switch for the outside connection

Do I need a vpn tunnel setup or should the terminals ‘find’ the main office if setup correctly?

My thinking is that I get a VPN firewall to make a tunnel between both offices and that way the remote office can be on my same IP network using DHCP.

I also have to get webcams setup as well for meetings so that we can see each other.

Any thoughts on how to set up the remote office?