HuskyPup - 10:40 am on May 21, 2013 (gmt 0) [edited by: tedster at 12:17 pm (utc) on May 21, 2013]
I see that as optimum but it is a question of workload and cost.
These days I honestly do not know how Google treats a network of several company sites targeted for each country. All mine seem to be fine however they have all been going several years therefore Google's had time to absorb them.
Cost wise, domains are cheap if you know where to buy them. Hosting, I actually do most of my hosting through London and Google has managed to separate the ccTLDs from each other pretty successfully, in fact they've done better with them than my .co.uk and .com
In my experience do not try and hide the fact that they are interlinked. My users can go from one region/continent to another with one click, whether that is of any use to you I do not know however within my industry it is important for volume trade purchasers to be able to source an alternative supply source if their original one is not able to ship for whatever reason.
[edit reason] removed some specifics [/edit]
[edited by: tedster at 12:17 pm (utc) on May 21, 2013]