Using the IP address of your instance, you would configure the following options:
IP Address/Port: <YOUR IP ADDRESS>:80
Enable the option "Enable SSL offloading"
Disable the option "Rewrite the domain names of the links in HTTP responses"
Restrict only sending us specific paths
Since you will only be sending us certain paths using this URL rewrite, you should setup a filter so that this URL rewrite only gets applied to a regex pattern. Example would be regex pattern ^(img|stat|style|your-page-path)/(.*) to filter the requests to send us old these paths.
In addition to the default paths img|stat|style, your-page-path would be replaced with the pages you want to host with us.
Host header
We will also need you to configure the server to preserve and send us the "Host" header so that it sends us www.yourdomain.com on the requests so that we can load up the correct site and page.