I need to add the pots would be filled with a hose connection they wouldn't be filled sitting inside the sink.
I also looked up the CFM requirements for the BTU output and it is about right for the CFM I came up with.
These are the same numbers I came up with a few years ago too.
A lot of it has to do with styles of cooking.
I like to cook stuff like blackened fish and so on.
Things that create a lot of smoke.
I looked up the noise level of the vent hood it puts out 7 sone on high 1.2 on low at 280CFM.
The one on my over the stove microwave sounds like a freight train and does nothing and is clean.
maybe like 5 sones.
I cant afford one with a down stream fan.