SBS2003 at home

[P51D Mustang]

I'm thinking of running a guinea pig install of SBS 2003 at home. I have a cable modem connect, a basic NAT router, & a spare switch.

My network config should be cable modem>router>SBS box (2 NICs)>switch>workstation, right?

I wouldn't want to have the Exchange server running-I'm thinking that I could let SBS install it then shut down the Exchange related services. (Cox is snarky about running a mailserver on your personal account).

I'm wondering if there are any common "gotcha's" I should be aware of before taking the plunge.