A or b, c does nothing. Post elevations of your proposed kitchen as well as any sections you have made.

36 inches of cook area needs 42 inches of venting and not less. Matters not what you sear or fry. Or what method you select.

You need to show the ENTIRE kitchen plan layout, and as to the "look" , more info.

I would not divide in half the kitchen, with upper/lower change in paint/wood. You need to consider the flooring as well. One perimeter finish, and change at the island.

You have nowhere near enough information in your question.

"Just frying eggs and bacon" most definitely requires venting as well!!

We need to see the plan and it does not matter what you cook venting is a must . I do however often use a hood the same size as the range when the design of the kitchen just needs to work with that size but I do up the CFM when doing so. I do not think wood or plaster hoods are ideal they get dirty are hard to clean and often discolor over time from steam . Waht does your KD say ? If you wnt real help here post the plan and I think 2 toned kitchens are just adding one more element to deal with that is not necessary

And we need to know what is above the kitchen ceiling: bedroom, attic, roof?

Hello all and thank you for your thoughtful comments.

Regarding the kitchen layout, it's L-shaped with an island. The range will be centered in the long end of the L. Refrigerator will be on the short leg of the L. No other builtins.

I don't have the 2d layout from the kitchen designer (the whole cabinet selection is still in progress and somewhat shrouded in mystery --- an annoyance about this process I can go into further if you like). Attached now is the preliminary layout of the kitchen taken from the house plan.

This is a one-level home with flat roof.

One can quiet hoods fairly well if the blower is external and a silencer is used in the ducting. The silencers made by Fantech are about 4-inches larger in diameter than the duct size (which depends on the CFM).* So a chimney shroud that is large enough could accommodate a silencer in the path to the roof. Otherwise, and this is particularly relevant to a flat roof, the external blower could be kept relatively quiet by using a mini version of a commercial up-blast blower, sized to achieve desired CFM when operating at a lower than maximum fan speed. A roof pedestal will be needed.

If a more typical residential roof blower is selected, it too will require a pedestal to give it some room to push air out above the snow, and this pedestal could fit some of a silencer if the counter-hood-duct-ceiling configuration was a tad short for the silencer of choice.

The make-up air issue and its system's ducting is also a subject that will require some planning.

If the OP's intent in this project is a simple over the range hood in the 300-400 CFM (rated) category, then quiet will likely not be achievable, but MUA will be easier.

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*We can work the CFM once the hood entry aperture is determined from the various factors driving the design. One's goal, of course, is to overlap the cooking zone so as to capture the rising and expanding greasy effluent cooking plume.

There's not a decently noted dimension on the entire plan.

"Shrouded in mystery" cabinet plan? Why? It's a cabinet salesman in a shop? Or an independent KD, which it should be, but seems not to be, here.

At the very least the plan is less than fantastic at this iteration.,,,,,,,,,with a ton of design errors, some as comical as thing five people can sit that close at the bump on the island.......which seems too long and a fridge in a bad spot too close to a wall

Thanks for sharing, Jan.

Everything noted on the kitchen space in the plan is "placeholder" and doesn't represent where the appliances etc will actually go. Similar for the island. The fridge, as you pointed out, will not be that close to the wall. I'm attaching another version of the plan (not the kitchen plan, the plan from the house plans) with some dimensions.

WELL........

Still a guesswork project. Every wall needs a dimension, and it is helpful to show the entire living floor that houses the kitchen: )

Basically for really good help - it's inches that matter.