Reality 4 lighting recommendations?

Herald of Fire

Eager to test some of the nice shiny new materials present in Reality 4, I put together the following scene using Brodie, Belle and the L'Atelier set. I got what I thought was a decent enough lighting solution in place (curved mesh light behind the camera, sunlight + sky through windows) and hit render.

Well... after over 3,000 samples, it was clear that it wasn't going to clean itself up any time soon. The image remained extremely noisy, and the efficiency was well below the 100% I generally get with most renders.

So, I put it to you, budding photographers or Reality enthusiasts. Any idea on how to add some natural looking light to this scene without leaving my PC to render for the next decade? It's a bit cramped inside the set, and there is actually a roof which I've hidden for viewing purposes.

TheWheelMan

So your camera is inside the enclosed space? Do you have an example of the render you could post?