You have gotten a lot of ideas from your post! I do not have a cape, nor do I live in the South. Here is what I would do. I LOVE the idea of the peach/pinkyorange concept for the front door. It will set your home just a bit apart from the crowd. I would do the body of the house in a soft pale ivory, not bright white. It will work well with the front door, and speak to the roof color, while not accenting the roof. The shutters would look good in a Taupe Grey, a deep tone to work with the black windows, but not bold black. Possibly SW's Westchester Gray. I also love the idea of the large exterior lights at the front door. They bring attention to where the door is. I would paint the storm door the same color as the front door, to bring continuity. Post pics when you complete this!

Glad you have asked for suggestions before it's too late. I am commenting on this photo. Why is there crown molding here? There is no other crown molding anywhere and it is in no way related to the rest of the trim. It looks lost in translation. Remove it. Why is there picture framing? Remove it as there is no rhyme or reason why it should be applied (and I mean applied) to those wall areas. Just choose one lovely neutral color for all the walls (eggshell finish), trim (semi-gloss finish) and ceiling (flat finish). Let is all blend together. The different sheens will make simple trim look more important. Would you share about the black ceiling?

I agree that a white subway that matches the counters would be a good choice for a backsplash. If you clear everything off the fridge and get a small tension rod and cafe curtain for the open shelf that would get rid of at least half of the visual jumble. As mentioned above, we would need to see the rest of the space to suggest a wall color. A blended backsplash tile might be a better choice to tie together the floors, cabinets, counters and the rest of the space but it's hard to say without seeing the big picture.

If you prefer to use BM paint, Edgecomb Gray is very similar to SW Accessible Beige. To me they are indistinguishable. But I have EG in my primary bedroom and it doesn't have any green undertone. Paint colors don't look the same everywhere - in your lighting maybe you will see some green. But I chose it specifically to not have any green. I sampled Manchester Tan when I was choosing my bedroom color and thought it was too tan. :-) I have had luck cutting tints by 50%, but you can get a very different result than what you're expecting. I think it's more predictable with blues or greens. I don't notice a difference when a tint is only cut by 25%. I love Grant Beige, I think for you it would be worth sampling a larger area with it. It's important to sample a large area before committing yourself. You can't tell from paint chips what is going to work. There have been a couple times when I thought I had chosen the right color (even with smaller painted samples), but after having about 10 square feet painted as a sample I changed my mind. Everything looks different when you see a large amount of it. Paint a sample on a board (be sure to do two coats so it will really look like the finished result) so you can move it around to see how it looks on different walls next to your trim, floors and existing furnishings.