The fireplace could be an issue in a room that size...First,unless you live in the woods there will be extraneous noise drifting down through the chimney- airplanes,cars,wind whooshing,not to mention your old deaf neighbors screaming at each other.I have a fireplace as well in my dedicated listening room-formerly the living room,and after
dealing with these noises i went out and bought a rug and draped it over the entire run of the fireplace.Then i went out and bought some lovely dense fabric,used for curtains and upholstering furniture.That really silenced the rowdy all outdoors and brought an almost chapel like quiet.Another option is to buy a wooden fireplace screen,many are sold on Ebay and elsewhere,often ornately painted,that might not compromise the decor.There in,you might want a roaring fire,if that be the case print this out and throw it in.On the other note of a wifely person teetering on the edge of letting you follow your muse in your own room follow these directions-first leave motorcycle magazines around the house and don't say anything.After a week you start casually mentioning how much you would like a really big,dangerous motorcycle,maybe it is my real dream,my fate,and i really don't feel comfortable with helmets.If that does not work, claim hearing problems that can only be cured by having a dedicated music room.Start working on that now! Download a lot of information on Tiger Woods and leave them around the house.Ask your wife if it is legal to carry golf clubs on a chopper.See,not all the advice you get on this website is either good,or bad it is how you use it or how it applies to your situation.