what type of range hood should i install in our renovated kitchen, thanks a million!

my kitchen is being renovated and i would like to install and outside vented commercial type range hood. The vent would have to extend a futher 2- 3 feet above the cieling height and make a right angle turn outside , There will be no cupboards above or on either side of the range hood and stove/oven. My ceiling height is 9 1/2 ft , room dimmensions 11ft x 17ft, This is just the cooking area, as the main eating areas are in adjoining rooms. Our home is also a B&B and I do some catering for my B&B guests.The kitchen does not have to meet commercial standards. Affordability is an issue.

placeholder text for bug in Chrome