Hi there and thanks for your questions and interest in our project! The bottom of the range hood is approximately 36" above the range top. The homeowner is 6'3" in this particular situation, so we raised it 2" higher than normal to accommodate his height and to be absolutely sure that he wouldn't hit his head on the hood when cooking. We would typically place the bottom of the hood around 33" to 34" from the range top, with 32" being the absolute minimum. To address your other question, the distance from the window wall to the island is 46", the distance from the range wall to the island is 61.5" and the distance from the refrigerator wall to the island is 64.25". In a smaller kitchen, the recommended walking space between an island and perimeter cabinets is 42" for one cook, 48" for two cooks, with the bare minimum amount of walking space being 36". I hope this helps and we wish you the best of luck with your project!