Now if your kitchen was swapped with the Master Bedroom as suggested you would have the kitchen, laundry, shower altogether, which then opened up the house to the eastern garden

I should have been clearer in an earlier time I did a floorplan with the kitchen where the master now is and rest of the rear of the house across the back faced out to the northern Patio and the Eastern garden

That is great depth If you have cook top and or sink on it. Size and what you have in it all depend on what space you have and how you cook.
For me I have a 1200 x 900 island as that is what fits. I could use a longer bench. Clear bench space. Can wipe bench whole from one side. Kids on stools can help prep. I often have an electric frypan on it. Glad my cooktop is on side bench as when do stir fries get hot oil spatter and keeps most hot pots away from kids reach. I’m not cooking for audience like the tv shows. Also sinks on island up chew up space and create a blockage of dirty dishes and taps between me and guests.

My island is 3500mm x 950mm. With a 300mm overhang. I also do not have any stools at my island because our eight seater dining table is adjacent to island.
I have my double sink with drainer, and plenty of bench space, because of bench length. So works for me.
As oklouise has mentioned, measurements of your kitchen will dictate how big your island is. A 1200 deep island would require you to walk completely around it to clean, unless your 6 foot five.
You have also said, in one of your initial posts, that you never eat at a dining table, so maybe you need a deeper bench.
But, I would like to think that once you finally renovate your home, you will have family meals around an actual table.

Thank you Houzzers I never think of these things. @dreamer I would also like to think we will dine at our new table, given the chance that we have a space to do so. I'm thinking more of positioning my sink near the servery window and leaving my kitchen island free. I've never had a kitchen island before, only L shape and U shape kitchens. I hope I.dont regret the island without the sink. So many decisions. It really is mind boggling and stressful. With our island I would like to position 3 stools there. I hope the configuration of our island will suit the space.

We have just put in a 1200x3200, this allowed us one piece of stone, our last house was 4000x900, i much prefer the additional depth, and very happy not having a Join in the bench which was required for the 4000 long one

I’m dreaming of an island and the way I think about it is that it’s allowing whoever is in the kitchen to be more part of the action, so what do you want to be doing there? For me it’s not the washing up, or the cooking at the hot plates, but it’s more the food prep. So I would personally keep the island clear, but mine will also be quite small. You’ve got more flexibility if you can fit in a long one. Also depends on what sink you want - if a double with drainer that’s about 1500mm so you’re not left with much clear bench space If it’s in the island.