Apologies if I am jumping in, but I just wanted add something to the mix. I also have a very similar situation and I posted this question on this forum earlier today. So I was wondering, does it not matter that each website has geographic targeting for different countries on Google Webmaster? For example, we have a brochure website, and we are selling the same service in multiple countries. It make sense to have country specific domains. And it is very difficult to describe the same product 3 different ways. It just doesn't make sense. However, are you saying that the sites would need to have unique content or different content from each other even though their geographic targets are set to different countries.
By the way my sites are starting small with around 10 pages each.