Houzz is the new way to design your home.
Your floors, but notice how the dark furniture is set against bright walls or the light rug?
desk under window
I like the different depths. I think this will help with the narrowness of the room
see how cabinets become part of back wall?
long low dresser cabinet
Another look for the cabinetry. Not Doug's favorite for your project.
open book shelves add depth
Another style of built-ins
Elements of this design would work, but lightened up, not in the dark wood.
simple, modern desk area
Wall of cabinets
another dresser design
One more option