Changing OSX Mavericks Server to default to personal website rather than welcome page
The way to do this within Mavericks Server is to adjust the Server Website Preferences to the folder you are locating your HTML pages.

Here's how to do it:


Open up the Server application, and select on Websites, under
Services.
Double click on "Server Website" under Websites.
Next to the option titled "Store Site Files In:", click the text
box, select "Other...", navigate to the location where your website
is stored, and select its top level folder.
Click the "OK" button


That should be all. If networking/DNS/Port Forwarding are properly set, you should now be able to load your site.