You would be good with a 300 cfm hood. 1,000 cfm are for kitchens when you are running fryers, grills ovens and so on. A range hood in your house is no more then 600 cfm 9 out of 10 times. Your only trying to pull the air around the stove top area out. if you get into 1,000 cfm hoods you would have to bring in make up air (fresh air). Otherwise your not going to pull 1,000 plus cfm's.
Everyone seems to think the more power you got the better it is. That's not the case for the small area's we are trying to cover.
If you want a brand new 4'x8' stainless steel kitchen hood with a 1,200 to 1,500 cfm exhaust fan, built in fire extinguishers, Safety shut off panel, grease traps and lights in it I got one at my work for around $3,000 plus shipping. You will need a make up air unit with a heater built in it. We just didn't use it on a job and are stuck with it.