After 20 years lighting sales and domestic consultation the only advice is to make them equal distance from each other and from the edges of the island. You dont mention anything in or on the island like a sink so if its just work space make sure they arent to low that they create distinct spots of light, the idea is to provide balanced light along the whole benchtop. Also the fact they are such a solid construction they will provide a definite "zoning" effect, you could possibly raise the middle 1 to give a variation to the theme but after all its your home do what YOU want

Hi Simone, Have found something similar, Indah rattan pendant from Zillow+Hutch Cosmo wire pendant from Crate and Barrel Haven’t come across yours yet.

Hi Julie, thank you for your advice and compliments. liked the option 2 and 4. Can you please guide as to where are these available from. Also I am a fan of single string instead of 3 individual pendants. thanks once again.

That’s a lot of lights already. It’s hard to tell. Is 1,2 and 3 in an L shape, with 2 roughly in the corner of your benchtop? A picture showing a bit more of the bench from both angles would be helpful. And it would also be helpful to see what type of pendants you had in mind.