This is why I always have the electrician run the supply wires in the ceiling, with plenty of slack. We wait until after the drywall is done to cut the holes and use remodel boxes. People can’t visualize. Even when you draw them diagrams. Or, do an actual real completed DESIGN from the beginning, with all choices measured and specified, and SET. Instead of winging it without the ability to visualize. Design BEFORE you do any demolition or building anything. Then the boxes and lights go where they need to go with no angst.

Glass inserts in cabinets with lights inside cabinets can brighten the room. A patterned drum shade in fun latter/color would add some sparkle. Faceted square crystal hanging over island would reflect light. Pretty cushions on dining chairs will bring in brightness! But I really think the light fixtures work in you kitchen. Maybe lively wallpaper in the table area and new cushions in chairs would give you the big pop you are looking for?

Whenever your post seems too long it probably is and at the end we still need a picture and you need to know what pendants you are using.

My ceilings are just under 8' and I have a tall husband worried about bumping his head on pendants lol. Our island is 9' long but only 40" wide. We went with clear pendants so visually they weren't intrusive. Played around with how far off the island and found a height that worked for us (my husband). We originally tried the smaller 6" but in the end got the 10" version of these from PB: https://www.potterybarn.com/products/pb-textured-glass-pendant-hood/?catalogId=84&sku=3564536&cm_ven=PLA&cm_cat=Google&cm_pla=Lighting%20%3E%20Pendants&region_id=658780&cm_ite=3564536&gclid=Cj0KCQiA6t6ABhDMARIsAONIYyyT9EKIF7j5Z49P7maicy8XKMtK8CfyevVz58yNd1zpFvaXAbpyPc0aAjk3EALw_wcB