DHCP Superscopes?

I? am currently running a Class C network with DHCP and WINS, however, I? am very close to running out of IP addresses. Our company is currently in the process of adding an additional site, which will be connected via a router. This site will alsoinclude a BDC for authentication. My question is should I run a separate DHCP server at the remote site if I create a completely different scope or should I create a superscope on my current DHCP server. I?m looking for the best possible solution where I won?t run into major problems.