Unfortunately, I can't enlarge the floor plan and read the details. What is below the counter on the far left of the range? Microwave drawer? Your two tall cabinet sections are not configured symetrically - if the right is pantry space, what is the left? Could you remove the middle section of cabinets and continue the countertop across the entire left side for more prep space? If you plan to have 26 at dinner on holidays, will you serve family style on the table, or need the island counter for a buffet line?
If you choose a different style of counter stool that would slide under the overhang, you'd be better able to have seating there for daily use but allow access for buffet serving when pushed in. It does seem like a shorter island with 5 stools would be a better idea.
Q