I'm a new freelancer, but I work with Django in a small brazilian company. We have some experience with google, because we need it to stand out from the competition, and we try to keep our pages optimized. I can finish it in 1-2 days, depending on the size of your project. Most of the problems aren't that complicated, Django itself can solve some of them, like the Gzip compression, while others like browser cache would need some work in the server configuration files.