I think this piece is quite lovely. It appears that your couch and chairs have dark wood so I would be tempted to stain or paint the buffet to match these items. Changing the large modern handles to smaller antique ones might help to make it less bulky looking and tie in with the other items in your room.. I like the idea of putting a mirror in the upper door, however much as I like the criss cross effect in the sample pictures, adding more detail may conflict with the curves in your sofa and chairs. You could look for a decorative detail that has more subtle style. As for placement, it might go on the short wall where you have a bench or even on the wall where you have your table with two chairs, one on each side to balance the look.

I would recommend a soft gray...see photo below...

First, I would ask the builder to give you the dimensions of the furniture used in the plan. Since they've already done the legwork-you will know which pieces will fit. Many times folks go the the furniture store and end up with a huge sectional and it over powers the room. Second, just get what you love! You have to live there. Start to create an idea book in Houzz. You'll start to see a pattern. Then just find a sofa like the one in your pic that is in your price range. Just keep repeating until you have all your pieces. Same thing with wall decor (which I would do last). Have fun!

thank you very much to everyone who responded! I'll look into espresso and charcoal grays. As well as the steel backplash. Emmarenes, I'm living abroad in India, and the only granites in my budget are the local ones. I was advised against the gray and white local ones because i was told that they would not hold up well in the kitchen. I could have gone with a black galaxy as well but i have that granite now and despise it because of the way it hides ants and bugs so well. we live in a tropical area and there are always critters here and there. My first choice was a Brazilian white granite but it was triple the price. This granite is called Shiva pink, so it has a pink salmon and gray look to it. Im really hoping I don't hate it once it's installed. The stoneyard was a 9 hour trip up and down and i was just pressured to make a choice after several undecided trips. And I'm getting new cabinets put in. but I think I can wait for them to put the slab before staining the wood. Thanks for that idea :)