I just want you to be aware the TV will cover the molding.

Since your wall is flat you have to decide where to start and end the molding. You should lay this out exactly on the wall so there is no mistake as to what you want.

Be aware that I am taking a random size TV. You must measure how much larger your TV will be compared to your fireplace opening.

Determine how you will address your window treatment now so there are no surprises.

I found these light fixtures this weekend and think they might have some application in your home.