Oh, you sound so stressed! Other than the 3D rendering, I would recommend the old cardboard box trick to show how tight all the spaces are. Not only will you not be able to stand in front of your beautiful sleek drawers when you open them - you'll have to stand next to them - imagine coming in the door from the hall with a bag of shopping or your kids coming in with backpacks and then sliding through an 87 cm space. You need a lot more circulation space for a comfortable, working kitchen AND you won't be able to visually appreciate this island of your dreams where it is currently (as Jonathan said). Perhaps move the kitchen and island down in front of the internal bifold doors so you can see the island from a distance and gain more width and then have the seating at the end with the TV on the wall you already suggested, like this photo that J posted: Good luck!

This is a helpful podcast if you are thinking about what size of kitchen island you want or what to go for: https://shows.acast.com/love-your-kitchen/episodes/exploring-function-over-aesthetics-with-amnda-hughes

I like simple styles too. What about this? https://www.lightingcompany.co.uk/nordlux-mystic-20-contemporary-white-ceiling-pendant-p4846

I would deconstruct it carefully and in sections - take off the plinth first to check what the flooring situation is underneath it. If it's the same as the rest of the room, then remove the higher section. Lay a big bit of cardboard over the remaining units to see whether a single-height peninsula would work for you. If still too much, remove all the units and see how you like the open space. I think I'd be tempted to replace it with a small-ish round table - which can be moved in the space as required, perhaps closer to the window - easier spot to have quick breakfast/lunch at (esp if you have kids).