Re: How to export+Cameras...

In the render settings (cmd B) In the save tab there is a path option. You may want to disable Multi Render as well its in the Multi-pass tab of the render settings.

As for render speed...this is a common question. I am rendering a scene right now that is taking 11 minutes per frame... yesterday I had a project going at 45 seconds a frame it really depend on what is in the scene and how much processor power you have. There are a few threads that discuss how to get the fastest render times. But it does take time.

/Randy