Here is a room I made years ago that I thought I’d try with indirect lighting. No idea how long it took (I was rendering in max as well on the same machine) and I’m well aware the mesh is poor but hey, it’s a test after all.
One spot outside and two gentle ceiling spots on the books.
I haven’t really played around with indirect lighting at all, is it supposed to be GI or is it some kind of ‘cheat’ like AO is to get a sort of GI look in your renders.
I am a bit confused because if it is GI than isn’t that area around the stack of books too dark. The top book is brightly lit but after the fourth book in the stack I can’t really see anything I would expect some bounce light from the floor to brighten things up.
If the “Color Management” box was checked in Blender, it would already look more realistic. That said, the “dark and dramatic” look is probably a design choice in the case of Adelaide. Nice work on the film BTW. It looked promising.