So disappointed to see no replies to this, I need to know a similar thing in reference to a L shaped kitchen.

i'm glad you're planning to reroute access to the garage: clumsy traffic pattern change a generous room into a big hallway and can't stop thinking about your kitchen..1. where you have narrow cabinets/shelves in the pantry...it's possible to have built in shelves inside the dividing wall (think about the size of what you want to store: cans, bottles, skinny packets? and put 60cm base cabinets on the other side, next to the freezer 2. i can't see the yellow highlights for stools 3. width of pantry is subject to you wanting to keep the door to the formal living room...if so, measure 150mm past the door opening and that's the minimum width of the pantry but 1500mm allows space to comfortably walk past your freezer and have full size base cabinets with pantry drawers (cleaner than open shelves) 4. space between the b'fast bar and 'fridge should be at least 90cm but if you choose a wide b'fast bar and a big 'fridge a bigger space is preferable (stand a couple of chairs 90cm in front of your current fridge for a few days and see how it feels) direction of fridge door opening is also critical, first for the cooks and then everyone else: if the size of the b'fast bar can be enlarged or reduced with overhanging counter then a change of walkway is not so difficult 5. as suggested by girlguide, the cooktop and rangehood might be better on the outside wall for ventilation 6. there seems to be a lot of small cabinets and drawers in your plan and there could be some better (and cheaper) combinations but when i tried to access IKEA kitchen planner to confirm available sizes it's not responding today 7. i've attached my suggested approximate base cabinet sizes: starting with corners and work outwards, aiming for the biggest standard carcases and then add drawers to suit purpose ..

for a comfortable walking space the island should be about 1200mm - 1500mm away from the long side to the other counters and at least 900mm -1200mm from the end to any other counter or wall then the island could be 600mm deep and 900mm long to fit your cooktop BUT the cooktop on such a small island would not be very safe to use (unless you live alone and have no visitors) and there should be much better options....post a plan of the whole room with measurements and a list of everything you need to fit in the whole room

another option to consider with the island made up of 45cm deep cabinets with a 30cm deep knee space and tall shallow cabinets or shelves for storage...and, with a small space, a smaller island is more in proportion but still allows for reasonable walking space all around the island especially when stools are being used