Zaphod922 there is no specific bandwidth requirement but if there is enough failures then the download will eventually be canceled. Perhaps a coffee shop wifi hot spot to download the applications?
As an alternative you can download the base installers from Adobe CC 2014 Direct Download Links: Creative Cloud 2014 Release | ProDesignTools. You would still need to download the updates but having the base install in place will reduce the downloads through the Creative Cloud Desktop application.