I think you want more "elbow room" around laundry than is provided by merely positioning the stack there. At minimum move fridge down or elsewhere,and fit the closet adjacent with shelves/ racks/cubbys or cubicles to stash/fold piles of clothes.I would absolutley need more space and I've had laundry in the kitchen....it becomes a zone when in use....it's not impossible and you have space in the kitchen....perhaps pantry-type closet/room to segregate....bifold doors?Devoting that pantry closet would work....but then you might want a different pantry for food /kitchen use.

Your Prep Zone will be b/w the range and sink and doesn't have enough workspace. If you plan to put the coffeemaker in the corner b/w the sink and range, you're reducing your workspace even more. Why b/w the range and sink? A water source is a key component of a Prep Zone. The island as no water, so it won't make a very good Prep Zone - at least not a primary Prep Zone. I would remove at least one pantry altogether and then move the refrigerator and range over so you have a decent amount of prep workspace. Ideally, you should have 42" to 48", but if you can at least eek out 36" to 39" it should be enough to make do - not great, but doable. I would also move the trash pullout to the range wall next to the corner cabinet so it's in the Prep Zone and near the Cooking and Cleanup Zone. Unfortunately, your Kitchen does not follow the kitchen workflow, but it cannot be helped b/c you cannot move the sink and DW and, to be honest, with so many tall items and not much wall space, the best place for the sink is either in the island or peninsula. Regarding the overhang on the peninsula - why not put in a set of 12" deep cabinets behind the sink/DW to increase your storage and give you more space behind the sink to help prevent knocking things off and splashing? If you have a separate DR and plan to open it up to the Kitchen, won't that be plenty of seating w/o that table? I was going to suggest a banquette to help save space, but with all the doors and the big window, you can't fit one in. For seating at the island, keep in mind that you need 24" of linear space per seat and at least 15" of clear leg/knee space for the overhang. If your island cabinets have a decorative door or finished end panel on the backs, then that means your island will be 41.5" deep: 1.5" counter overhang on the front + 24" deep cabinets + 1" decorative door/end panel + 15" seating overhang = 41.5" . Is the opening on wall B the large window? Or, is the window on the left end of wall A? . . I suspect you probably don't want to hear a lot of what I've discussed, but if this is your forever home and you want to get it right, I think a few things need to be thought out more b/f you begin. Think about not just now, but how will things work 10, 15, 20, or more years from now. Good luck on your project!

Like the idea of moving the fridge to the sink wall IF you can put a narrow cabinet between it and the wall so the wall doesn't impede opening the doors all the way. You could then move your stove over a little closer to where the refrigerator was, giving you more uninterrupted countertop workspace. Have you considered an "L" shaped island with three seats on each side -- better for conversation to have someone people at a right angle to you than five seats down beside you with several people in between. That could help with your island triangle and you could leave the inside corner open as a space for a seat for the cook during meal prep -- without needing to walk around to the other side. https://www.google.com/search?q=%22L%22+shaped+island+with+six+seats&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwj1m8Wq37nqAhVUkHIEHTWtAIoQ_AUoAnoECA0QBA&biw=1352&bih=648#imgrc=QQDT5upJG8piZM

Puleeese do not put in extensive areas of white subway tile! This seems to be a common avenue for homeowners and/or designers when they want to avoid making decisions about color. In my opinion, adding white tiles to your beautiful kitchen will turn it into a boring space. I really like your use of neutral wood flooring, white cabinets and the mix of stainless and black for appliances, and I believe now's the time to brighten up the space with some use of color. I'd install the backsplash material under the cabinets and go up to (what appears to be) the common height of the window, door and cabinets, including the space above the sink (background of shelves). Have you been to a big (good) tile store to see what's available? If you keep an open mind, you should be able to find several styles and colors that you like (and that pick up on a color from a decorative item on the over-the-sink shelves or that complement other colors in your home)--and you can usually bring home tile samples. If something you like is on the expensive side, consider using it in a limited way (a few above the stove/below the hood in a special design or a running line of them under the cabinets, etc.). Then go for a simple (no busy patterns), reasonably-priced (and coordinating) "field" tile for the remainder of the space--one that is simple enough so it doesn't clash with the items on the shelves, and keeping in mind the other black, white, stainless & wood colors in the room. As for the wall color . . . Once you have the backsplash installed, it should be easier to pick a wall color. Just bring home some store samples of paint colors to see how they look at different times of the day and at night. It usually takes me several trips--to cull out the ones that don't work and expand on the ones that do work--before I can make a decision. I suggest you use the same color (light or medium intensity that doesn't overtake your now-pretty backsplash!) above the backsplash & cabinets and on the ceiling, which will give the impression of a more spacious kitchen. Have fun and good luck!