I like them. Your kitchen is lovely. But I am not a lighting designer... Check out this link. I cut and pasted a little of what she wrote. She even has an amazing diagram. https://kathleenjennison.com/2015/how-to-pick-a-perfect-pendant-light/ Kathleen Jennison wrote: For example if your room is 9 feet by 10 feet, then your pendant should be great than 19 (9 + 10) inches in diameter. To calculate the size of each pendant in a threesome over a kitchen island, follow the same formula. For example, if you island is 6 feet by 3 feet, then each of your three pendants will be greater than 9 (6 +3) inches in diameter.

As most common distance to have the pendant over the island/tabletops are 36", I would go with that distance but as you have a high ceiling and more room to play with I don't see why 4' couldn't work! I think it can look fine! Also, our lighting could be a great addition to your home. We do custom lighting so we will be able to work to feed your needs and wants. Different amount of pendants, and size of canopy etc. We also do 2D drawing before so you can have an idea of what it would look like before committing! Feel free to visit onhttps://shakuff.com/ or our instagram @shakuff_ :)

yikes. i dont know what you decided in the end, but i would have gone with a huge, single light fixture over the island - like those ones with multiple globes. not 3 piddly lights. they would just be dwarfed in all that extra overhead space.

Not enough information. We have no idea how this peninsula relates to the rest of the kitchen or what the sight lines are.