Change the default font in Pages (version 5.0.1)?

Overall I really like the changes to the iWork suite but an annoying feature is that all new documents in Pages seem to have the font set to Helvetica 11. Everything I need Pages for requires me to use Times New Roman 12, and I work in Pages all day. Everytime I create a new document, I have to change it from Helvetica 11 to Times New Roman 12. I've looked for how to change the default but I don't see it. Any help here?

Many thanks in advance,

Trent