seems a bit narrow, it must suck pretty good, but it might look cooler with a flared out round skirt on it, (and maybe a hoop led light round the edge). would be good if it was combined with other round/cylindrical elements. bar stools might be a good place to start. just seems too out of place in that space. try it next to a classic kitchen swing door with the round window. ranges on islands (and peninsulas) are a dumb trend anyway, although if you like dealing with 360 degree splatter and positioning dangerously hot workspaces in the centre of your work area, all power to ya.

Schweigen put out 2 designs that are flush to the ceiling. They run about $7,000+. The 4 panel one is 2M wide and other other one is 1300. I like the fact that it would leave the space entirely open and you could create the WOW with something else that would be seen from the entrance.

Have you looked at island range hoods? You can get ones that are flush in the ceiling or get extra long ones made. For example, Melbourne made Qasair will make to order. There is also the option of pop up ventilation units. They aren't the most efficient but will still help and sit flush with the benchtop when not in use. And even those sparkly recirculation units that look like a light fitting. I imagine they could be set lower as they are mounted from cables (I think from memory). That all said, I'm not a huge fan of a cooktop on the island. I worry that I might splatter all over my guests sitting in front of the cooktop. But maybe that's because I'm possibly a messy cook... Also I like a island free to act as a buffet when I have larger groups of friends over.

External fan, easy to clean oil collection filters. Whispair have $1000 dollars off until the 30th.