The wall of tile you re doing over the sink area will be a nice statement and has a more high end look.
Should wall tile be as high as the sinl.
If your wainscot is tile then it can serve a dual purpose by working as the backsplash behind your sink.
A classic offset or straight set pattern in a standard field size tile works best for this wall height.
Besides i always prefer to transition materials on an inside corner wherever possible and this is the perfect place to do so.
My cabinets are the tall 45 cabinets.
I did marble tile to 48 in powder room.
Tiling the side walls will sort of take away or diminish the impact of the back tiled wall.
I am planning on taking the subway tile backsplash up to the ceiling above the window by the kitchen sink which is an 8 ft wall that meets the slant.
For a truly classic look finish the top with a decorative trim or a bullnosed edge.
But only if it is high enough.
600mm high is usually a good rule of thumb and finishing at the low part of the cabinetry ensures that you maintain the height of the ceiling.
The classic design feature is usually between 34 and 54 high with 36 being the average height.
Plus that height kept the very wallpaper we hung above the marble safely away from splashing water.
Take wall hangings and mirrors into consideration.