Plus undercabinet lights I hope...

You might consider some smaller ( 4 in) recessed spot lights over the island in between 3 pendants or a third pendant light if the ones you have chosen are small or shaded or more decorative than functional.. How many lumens of light will you have with only the two pendant lights shown? The island will most likely be used often as a counter-top surface and you will not have enough task lighting as shown. I don't know how high your ceilings are and that should be taken into consideration when designing your lighting plan. I can see that your light plan is one that is based on the pattern in the ceiling. I prefer to use a light plan that is based on where light is needed in the kitchen. For your plan, I would place a recessed light in front of the refrigerator, one in front of the cooktop/range ,one in front of the sink, and three on the sitting area side of the island ( one at each corner as shown and one additional in the center for general lighting. I would put the corner lights on a separate switch. and the more functional lighting on a separate switch and the smaller recessed lights on a separate switch as well as the Pendant lights. You should have dimmers on all of the recessed lights. I hope that you have planned for under-counter lighting as well as the ceiling lights. You should also have an additional light closer to the pantry.

You might want to discuss these issues with a designer or a lighting professional as there are many other factors to take into consideration ( natural light, wall color, cabinet color etc.) when designing a kitchen lighting plan.

PS, There are some excellent suggestions in the comments. Dimmers always! I prefer LEDs with warmer and less harsh light at 2700 to 3000 Kelvin, The daylight ones (3500-4000K) are a cooler color ( blue) and if you have a white kitchen, they can make your cabinets look off color. If you have high ceilings, 5-6 inch cans are appropriate, 8 ft ceilings can use 4 inch cans, but you may need more of them. If your ceiling is white please avoid the black or stainless baffles, they make a ceiling look like swiss cheese! :)

I use only 4" in my kitchen designs.

I think it creates a more even distribution of lighting in you main isles. It should light all main work areas described above with Ephross Design. I also do not care for the large 6" holes in the ceiling, they just feel intrusive. Ephross Design has same comments I would make to you with exception of island. Number of island pendants or chandeliers depends on how large they are in relationship to island. Looks by seating, you are maybe 6" wide. You could install 2 larger size 10" or so or 3 smaller 5" or so. Getting some professional help is a good idea, you also need to plan on your lighting temperatures or Kelvin. Most recessed is 2700 or 3000 Kelvin. Your island light lamping or bulbs will need to match as well as your under cabinet.

Yes to dimmers, you want to layer your light as well as not own the electric company for light you do not need on all the time.

$” LED pots are the norm now and I would insist on them .Three pendants are a better choice than 2 and all the bulbs should be daylight LEDs in 3500 - 5000K range.LEDs are very cost efficient and IMO you do not need dimmers in a kitchen but under cabinet lighting on a separate switch is nice.