Going to be honest Bowl0l, and I say this with sympathy because as you know I did try to ask Fangamer about your issue when they weren't replying to you, but you're going to be in a very small minority who have the specific problem regarding the region. The 10 countries with the most backers are across North America, Europe, and Japan - and they're not going to have the issue you're afraid of having with the digital add-on content.
There are probably perfectly legitimate reasons why they've defined shipping regions the way they have (logistics, etc), and not enough cases where this would be a problem for backers to completely revise their shipping plans or make exceptions. I'm not even 100% clear on your issue myself and whether it's a regional problem, a specific country's PSN store, whether it's an absolute guarantee there will be problems, etc.
I hope it works out for you all the same, even if they weren't able to provide an alternative region copy.