Brett,
Yes, you can configure the static command to use the outside interface as follows. This config would redirect www/ftp traffic destined to your outside interface address to your internal server(s).
static (inside,outside) tcp interface www www netmask 255.255.255.255
static (inside,outside) tcp interface ftp www netmask 255.255.255.255
access-list outside_access_in extended permit tcp any interface outside eq www
access-list outside_access_in extended permit tcp any interface outside eq ftp
access-group outside_access_in in interface outside
HTH
Sundar