From a lighting perspective, and from personal experience, down lights have a modern showroom feel but do have a limited focus from a top-down perspective, which means if you want your TF to be well illuminated at night, you'll need at a minimum four downlights AND use wide angle globes. It's a decent size room so a single globe in the middle of the room isn't going to cut it. My home theatre room seems similar in size so I'll post a pic later of what happens when you have downlights in a large room.

In terms of shelving, I'm a convert now for all enclosed glass shelving. Keeps the dust out (a winner for me) and gives that showroom/museum feel about the room. It's probably expensive as well, but get a quote from a store that does shop fitouts.