That sounds fine, yes.
Also make sure your router's password (not the wireless password, the password used with probably 'admin' as the default name when logging into the router pages), is also different and alphanumerical and mixed case. Ideally over 10 characters too.
Also, in your router's pages should be a page with the MAC addresses of the computers using the router. This will show anyone else linked, but given your security setup you should only have your own computers.