Keep in mind that the color will look different if it is sampled on a painted wall. You should be able to mix colors and have it color matched--although depending on the skill of the salesperson, the match may not be perfect. We have done colors at 50%--I think that also depends on the salesperson as to how they do it. For us, we had SW softer tan mixed at 50% and it was just lighter than the original shade. I had sooooo many paint samples up--I did large portions of the wall in the samples--but having the samples side by side and doing them on top of our existing yellow walls really affected how the color looked and made it hard to judge how the end result would look. I ended up picking my favorite and painting as much of the wall as the sample allowed to get the best idea of how it would look. The svelte sage and grassland were definitely way too gray in my house. If you do a search, there have been other posts on greens--I know it was helpful when I was trying pick a green. I think I even had a thread and someone suggested a nice Behr color or maybe a lowe's color--it didn't work in my space as I needed to coordinate it with a tan adjoining wall--but it was nice--I just can't remember the color.

Our 2 yr old home is much like yours. Open concept with kitchen, dining and living area all in one open space. I have a traditional home (fairly formal) also with antiques scattered here and there. My furniture is cherry or dark wood. I have medium/dark cherry cabinets in the kitchen with a painted cream island. The woodwork and fireplace are white. I was torn also whether to have white or cherry cabinets, but I love the rich look of cherry wood.

what should I do on the wood floors? im doing white oak 5". should I do regular wood or quarter sawn?

It's really hard to give advice without pictures...the safest options would be to match the tiles or use carpet again.