A floor plan would help but IMO that island is too small for the space you do not want more than 48” for walk space around island and a 48” wide island would really double the storage under it since you are having seating at the peninsula. Almost for got to answer the question. When you have the pot lights put in have 3 equally spaced where the island goes and then you can always add the pendants there and the same over the eating bar then after all the rest is done you will know what you should do . IMO I would them over the island and leave the eating bar.

I I take the 16’ area deduct the 48” for cabinets 24 on each side you have a 4.5 ftwalkway and that is too much , it adds about an extra step every time you do anything in fact unless you have a fridge next to the island or seating along a side of the island 42” is ideal . I have a catering biz out of my kitchen and sometimes have 6 people working and 42 works just fine. a larger island is much preferable to a small one and you have the space.I would use the walk in pantry for yor cleaning stuff and build pull out pantries beside the fridge I dislike walkin pantries unless they are walk through like a butlers pantry IMO they are a hugw waste of space and I always put a stove on an outside wall if possible the venting is easier and a lot more efficient