Since your meal is an hour before bedtime you don't need to eat again before bedtime, but you should work in another snack during day to ensure you get all the protein you need every day. It'e very important to get you rfull protein requirement daily. Don't simply skip the snack altogether.
Yes, it's absolutely fine to eat a snack and then have a meal an hour later. You could also add another block of P, C and F to one of your meals to make up for the bedtime snack. Some other options are to eat a snack before breakfast, or to eat two snacks between lunch and dinner, or to make your afternoon snack a 2 block snack.
Also, an 8 AM breakfast should be fine. Dr. Sears has said that his guideline about eating within an hour of waking is meant to prevent people from forgetting to eat breakfast.
Good luck, your choice to do the Zone is going to be great for your kids too!
Consultant of Zone Labs
Certified Zone Affiliate