I would have to second the 3GT. The 3GT & the C really aren't competitors, but then, what does the 3GT go against?!
If you are really set on the C, I would really encourage you to get the folding rear seat. At least that would increase your cargo capacity.
Before you do anything, go look at the C and put the kids in the rear. Make sure they're comfortable. They're the ones who have to sit back there.