I’m not sure I could work with that gap with the dishwasher but others do so would prefer the 2nd option

Who would pick up the cost? Have you spoken to the quartz installer to see how they’d cut the worktop?

I would lose the overhang for sure, I'm not sure why you would perch on a stool if there's a dining chair. A pull out drawer dishwasher might be better? I've got a Fisher and Paykel one and it certainly feels like it needs less space.

i love a perch on a stool at an island rather than having to always sit at dining table, but i'm not sure there is enough room between island and that tall (pantry/fridge?) unit behind it. i'd also want more room for the dishwasher. used to have a F&P drawer dishwasher (as a second dishwasher) and wouldn't recommend it - too annoying to load, hardly anything goes in unless your plates and dishes somehow fit really well. just annoying really. we only ever used it when we had guests and needed to use both, whereas i thought we'd use it for smaller loads - no point unless there's just 1/2 in the household. I think I'd lose the small units, keep the overhang, re-centre the whole thing and also move it slightly further from the hob - 120cm would be better so someone at the hob doesn't take up that whole space.

I would lose the overhang as it looks narrow anyway. Assuming it’s 15-20 cm and you can move island, then that will more or less give you 1m. I’ve had 95 for sink before and was fine. If you really wanted stools, you could add a bar top in a different material eg wood at the end of the island as long as not too close to your dining table.

I assume the island is placed on top of the flooring and if so, can it be pulled away from the sink closer to where your dining table will be? Assuming there’s room of course. I think you need to have a space large enough for someone to pass behind you when working at the sink and hob otherwise you’ll spend your life dancing back and forth around the island if you can’t get past.

I'd choose option 3 since there isn't really enough room for stools without blocking the walkway. Stools on the end would be better as Lynette suggested.

Option 3 looks to be the best compromise but, to be honest, the island looks like it obstructs the main pathways through the kitchen and I’d be tempted to remove it entirely.

Ps... The end of the island has a drinks fridge... would Lynettes suggestion still work in your opinion? thank you!!

I think you’d be ok with the drinks fridge - you’d have room to open the door as the bar would be higher than worktop. This is the one we have (the edge contrast would grate but like yours it’s facing a wall) - it’s only a small overhang as we have the stools in the gap - our bar connects island to wall run of units. Maybe a semi circular bar/ledge could be neat on yours - kitchen designers have to measure it for safety/robustness in any case.