One-half of the can should be over the counter while the second half is over the floor area. This allows you to get lighting on the counter and down the cabinets and the floor. Depending on which fixtures you are using you then space them as needed (75 watt floods are usually every 4' on center) around the counter area.

After you have configured this, you go to where they are then needed in order to illuminate the rest of the kitchen. Is there an island? Are you hanging pendants or a fixture that will illuminate the rest of the kitchen, etc. This is all pertinent information as to how many more recessed lights you will need.

Thanks for your help. I am glad I asked: I had it all wrong. Thanks

Great advice. I was looking for this info as well. Does it matter if the floods are incandescent, florescent or something else?