Sounds like it's time for a mockup. I'd make paper cones similar in size to the pendants and hang them from strings over the area where the real ones will be installed. This will let you experiment with heights before cutting any wires.

Keep in mind that the higher a pendant is mounted, the larger and dimmer the pool of light on the counter will be.

I've seen pendants with a counterbalanced weight - the shade can be raised or lowered based on lighting need. This approach might help and adjust the lighting near the eating area based on need.

I agree with jon1270. Mockups are great. Also, if you find that there won't be enough light by hanging the pendants higher, you can add track heads in between the pendants where needed if you have enough wattage on your transformer. some people have added just one angled towards the cooktop.

Sometimes with the Juno Flex Track we have alternated with pendants and track heads to give the amount of light needed.