Request feedback on process of going live.

I am about to go live with my new e-com site (replacing a live site) and would like a bit of feedback.
Do you think my checklist is sufficiently complete?
I am using multisite setup and the folder is correctly named in the form of 'mydomain.com', currently accessed by symlink.

0: Switch to Maintence mode.
1. Point domain to new DNS servers.
2. Install and configure Mollom.
3. Install and configure SecurePages.
4. Test SSL thoroughly, having read about the issues others have had.
5. Test checkout thoroughly. (already configured and checked thoroughly once.)
6. Remove "Disallow: /" from robots.txt.
7. Switch to Online mode.

I know I left out the branches for fails at each step. But my main concern is leaving out a required step to add to my list. This is my first Drupal site and ya I'm nervous.