Hi Jim

here you go....

If we were doing this, we would allow 3 pendant lights across the bench, 4 down lights in the kitchen walk area, two down lights in the overhead cupboards switched from the wall, 6 in the dining and six in the living.

The living and dining are switched as 2 ways, meaning that you can turn them on and off from both locations shown with the dotted lines.

Location of switches is personal, but again, if we were doing this I think switching the kitchen lights on over at the living switch is too far so have separated them.

As to the overall spacing and number of downlights in any area, that depends on ceiling height, type of light (eg how recessed they are/aren't) etc and your personal preference.

There is a lot of technical advice you can research and lighting consultants will no doubt have other inputs but the above is a good starting point.

Cheers