It's sort of a personal preference. I like your plans but I prefer the clean look of cabinets (and hidden storage). For example, this...

versus...

thank you for those pics, very . helpful and agree, shelves not idea. Here is our original inspiration pic our space is wider (but also taller) so it would be a lot of doors.

The second pic is more real to our space but the glass doors don't have the same feel as the first pic. THird pic - doors feel so large! Need a happy medium.

Simplify that design. No reason to have brackets to hold up the mantel. FP should extend out further than cabinets.

Don't forget about lighting.

Are all your windows horizontal format, or just these two?

Maybe like this instead. All brick, firebox down to hearth, beefed up mantel, changed windows.

I think it would be great with cabinet doors and no open shelving. Open shelving will clutter up the look, you want the main focus on the fireplace stone and mantel. Overall, it is really nice looking though.