Two things I'd focus on .

Can you put up with less space in the family room ? I gather you want more space and more storage in the kitchen , and its got to come from somewhere . You can either squeeze more into the kitchen , or take some from somewhere .

And just a small point 2 -- I personally don't like a fridge beside the cooktop and oven , sort of seems counterproductive .

If you go with an island, this would very compromised for space.
Your kitchen is 4175mm x 3130mm

If you have 600mm minimum benches, 1000mm walkways, which is not really ideal, should be 1200mm. This only leaves you 875 for an island width, in total.
And the other way, 600mm oven bench, 1000mm walkway. This only leaves you 1530mm for an island length.
So with a 875mm x 1530mm island, which would be the max size, because this is compromising walkways and bench widths, would this size island be big enough for cupboards and overhangs for people to sit around???

Do you use your dining room?

With the kitchen plan with peninsula, there is minimal work space around the cooktop. Again this is compromising the space.
I suppose you could put covers over your sink to make them into extra bench space.
Get your kitchen designer to advise on the measurements of bench space between sink and cooktop. Would this space work for you?

how do you use the dining and family rooms now? have you considered including teh dining room space as part of the new kitchen and have you confirmed that the wall between kitchne an family can be removed safely?

Thank you so much for explaining that, helps a lot.
The dining room is kind of a nothing room. Has the computer desk and a display cabinet in there and not much else. Was thinking with the peninsular plan, maybe have a smaller pantry which will give me more space beside the oven, and put a second pantry in the dining room?

Pottsy99, I agree, I don’t like the fridge next to the cooktop oven either.

okLouise, yes the wall has been confirmed as non load bearing. We use the family room just to eat breakfast and dinner, occasionally watch the tv. There’s only myself and a teenager and he’s barely home 😂 Don’t use the dining room at all but it has this bulkhead??? not sure if that’s the right word.

before knocking down any walls you should rearrange the family room to make sure that you have the space needed for furniture as knocking down the wall loses wall and storage space in the kitchen and family room but consider using the dining room for a pantry and study (subject to problems with the window) and there should be space for a big fridge space, preparation space between fridge and sink and cooktop with oven underneath and central kitchen island that could be about 1400 x 1100 with space for a few small stools

the bulkhead suggests that the dining room has been pushed out under the eaves and that shouldn't be a problem but you would need a different window to use the dining room for a separate pantry and study and to save that expense consider freestanding tall cabinets in the family room for pantry storage but that will impact the location of a TV and seating for the family room

Similar to okl plan but I would omit the dividing wall in the dining. In the kitchen design island width to have a drop side round table abut it that can be pulled out when entertaining,

Keep the cooktop as it is and add the fridge to the other end of the sink, this will give easy access for family and alfresco use. The long island can be just that 2800 x 900 with cabinets down one side and space to sit at on the other, or you can say halve it and have a table at the family end and replace the other half of the situp with 300 deep cabinets

Instead of a sofa you could have a dining table, just depends on what you prefer.

The old dining used for both study and Pantry/storage Mudroom? To accommodate the window in the study, I suggest drawers against the wall with an open desktop across the window

You would need to change the garage door or you could keep it as is and just lose some of the cabinet (900) to allow the original door to open

I know someone who turned their dining room into a butler's pantry.

As much as I would love to use the dining room, budget constraints have put a stop to that. These are my latest two options. Would love and appreciate any thoughts and advice.

Your space is 4175mm wide. Can you show your measurements on your plans for clarification.

From practicality I am concerned about whether you can unload straight from dishwasher into cutlery and crockery drawers. It appears the angle will prevent both being open at the same time. Maybe move dishwasher to straight section or move drawers to bench.
With bench I would delete the chair opp pantry at the angled end, or at least keep it out of the way so you aren’t tripping over the chair when getting things from pantry to bench.

Dreamer, they didn’t give me any measurements. Probably sick of me and my indecisiveness.
You are right Kate, I have the dishwasher and drawers like that now, and it is a pain in the butt 😂

Without measurements, how can you be sure that the space is workable for yourself? As the client you should have measurements. Then you can make an informed decision on which you feel is better. Think about how wide walkways are, how deep or narrow cupboards are, etc.

Hi Tracy, If you check out my earlier post it gives your kitchen dimensions 4170 wide x 3100 deep. Most kitchen cabinets are 600 deep, so I'am guessing that the cabinets on both sides of the kitchen are 600 deep, My island was 900 deep, with 1200 allowed between it and the cabinets next to the fridge. The dimension from the other side of the island to the wall was 1470. The first kitchen layout you last posted looks like it has 600 wall cabinets with a 900 deep island , pls check my diagram above, hope this helps