I think at the very least you'd benefit from loosing that first return of kitchen units with the rounded end - keep to an inverted L shape and make the island longer as it will be a work zone with sink and DW - so needs to be longer ... Can you shorten the floating wall on the left at all ( I assume that's part of the old house - and the new extension is from the window to the right ? )
Are the utility walls there yet ?
Do you have pets ?
Is this a large family home ? Would you like a pantry ? Is the rest of the space to be used as a second or primary lounge /family room ... and to dine in too? How many do you need to seat ?
How many for soft seating ?
Is this your forever home or just to do up and sell on ?
If the answer is your forever home ( or 10years ish ) then I would seriously consider either booking some 'one to one' design time with your local independent kitchen supplier - or booking a freelance designer ( like me) to work with you, via email, to come up with a brilliant design to tick all your boxes and then shop around with that design to find a supplier with great credentials and a good price to supply it !
:-) click on my name to get to my pro page to see some past jobs and client comments if you like !