A few notes about the project:
1 - There hasn't been any changes at the fireplace structure.
2 - I propose to relocate the owner's suite door in order to obtain a new wall. This wall would serve both for a better view of the fireplace as a visual focal point in the room and also for a better sitting área.
3 - I propose to split the new Fireplace Surround in 3 parts, as shown in drawings.
In this way is much easier to fabricate and fitting in place.
4 - I added Element C (mantle) to be used as an counter top holding electronics like DVD, etc.
If you don't want you can put it away. This not gone affect the fireplace.
5 - SINCE I DIDN'T CHANGE THE FIREPLACE STRUCTURE I WOULD PROPOSE SOME CHOICES FOR THE REVESTIMENT OF THE FIREPLACE WALL.
STYDING YOUR LIVING ROOM I SUGGEST THE STACKED STONE GREY. PIC 1 & 2 (RENDERS)
Kind Regards Arch Erion Dimushi