Extract XML from forms authenticated website

Hi,

I'd like to be able to use data contained within a third party XML document within my application and am looking for the best way to do this. The XML document is published on a secure web site. In order to retrieve it I can manually go to the site, enter my username and password and if authenticated I see the XML document. The document has about 200 nodes each containing about 7 children. It's contents could change on a daily basis. The web site uses forms authentication. I may need to reference the data over 300 times in any one day.

I've considered a number of ways to use this in my app but am also open to other suggestions:

1. Contact the web site directly from my app each time I need to reference the XML data.
2. Write an automation script to obtain the XML data every day at a pre-set time and store the document for consumption by my app.
3. Write an automation script to obtain the XML data every day at a pre-set time and store (via SSIS) the converted document in a database for consumption by my app.
4. Write an automation script to obtain the XML data every day at a pre-set time and store (via script) the converted document in a database for consumption by my app

I think I currently favour option 3 but would welcome feedback.