Scuba, just split them in half, 4 & 4. You can make it 7 & 1 if you want, as long as you have 2 separate 20A receptacles. If you know how you will be using your countertops then plan ahead accordingly. What you are showing looks good if your measurements are correct.
Actually there will be 3 circuits (that diagram is not my kitchen - just an example someone posted
I know what I typed makes it seem like a lot of circuits
But the 5' countertop will share both circuits with the 4' counter top & the countertop that borders the sunroom. I know its more wire to run across the room, but I want 2 circuits on each counter instead of 1 circuit.
It will be a big improvement over the 1 circuit that used to run everything including the fridge
I seperated the fridge onto its own 15a circuit
Then I seperated the 2 (yes only 2) outlets each onto a 20a circuit
I then added the 3rd circuit
We had the toaster (800w) & microwave (1100w) plugged into a surge protector & it kicked out. Turns out of course it was only 15a surge. So now the toaster is on the surge plugged into the 3rd circuit. The microwave is plugged into the 2nd circuit. Our toaster oven (1500w) is plugged into the 1st circuit
This doesn't even count the coffee maker, cappuccino machine, pancake hotplate, blender, can opener, crock pot & other items that may be plugged in
I think 2 circuits as the minimum is fine. But it makes sense to have 3 circuits given the appliances we use
Usually its only when you are having a party, Christmas, Thanksgiving etc that you need the extra power. But that's what I am planning for
This is a friends house in Ohio - over 12,000 sq ft
I haven't been out to visit, but I am sure they have quite the electric setup