It looks nice as well but I don't know if I will be able to get a hold of it in Bolivia.
you will: there are plenty of chinese web shops who offer worldwide free shipping. your biggest concern might be finding a local service center, though.
if you can wait for a couple of weeks, you may want to check out the oneplus x, too. it will cost around $300, and has roughly the same hardware as the oneplus one, with a smaller footprint which is easier to handle.
i'd also check some huawei devices: honor 6 (discontinued, but highly recommended if you can find one) and p8 lite are all good options.
the idol 3 is cool for the price, but it only has a snapdragon 410 and 1,5gb of ram; the other mentioned phones offer more serious hardware and they are more future-proof.