The area is a stairway/entryway. The stairs are 42ins. wide and are against the righthand wall as you enter the front door. There is an additional 36in of open space to the left of the staircase. The way the light box is presently hung, it looks like the light will be centered on the railing, but placed forward from center, toward the lower part of the stairs, which is how I get the 13ft height. I wish I could explain it better, but it's an odd space. Anyway, the light I am looking at is a Sea Gull Lighting fixture. It's from the Somerton Collection, #51376-839. Please keep in mind that this light, which I've seen on-line for around $500, is at the very top of my budget.

I dig the banners Groveraxle posted, they're 8ft high! That's a statement worth making. I advise against hanging most art, like your own examples, so far above eye level. Just ignore the wall above and concentrate on finding items that are a nice proportion to the length of the wall/area. We humans tend to concentrate on what's in our line of sight. Too high or low, eh. For the most part, art should hang at a level that's easy to appreciate the work. The center is usually about 60" from the floor. Otherwise, it's hung in close relationship to piece of furniture, at a comfortable view level. So go lower when viewing it from a seated position. Beth showed examples of maximizing the horizontal plane. That's what I would recommend, as well.

for heaven sake, six months after completion this light will just be passed by as you go up and down the stairs! You cant really look at a light fixture as you go up or down stairs because you have to look where you are going, for the most part people will look at this from the ground floor dont get too hung up on the 4 points. I would point out that the can lights will have a cut off where the light reaches and the light fixture will cause major shadows, so the balance of wall sconces will be good.

I think your entrance could become much more welcoming, so before buying a rug, maybe look at inspiration pictures to select the right style vs just the right size. Based on the walls and the black chandelier, modern farmhouse could be a great look. Don’t have to do everything at once, but if you have a plan, it will be coordinated as you make updates. Would place a very large rectangle rug, placed after the staircase, so it makes that wider area more prominent and highlighted by the decor Suggest moving your table and art to the upstairs landing and now you can coordinate the whole space using a longer console with art or mirror on the long wall. If you add baskets on floor it will help hide the heating element. Where your previous table was, add a bench and hooks, both being really handy You could paint the interior door black if owner allows On upper wall of staircase a set of large family prints would be very nice