Don't worry, I think we are managing OK with the language.
When you have that expression: "...but aren't one of those breeds". I just have make half of the translation could you explain from another way?
When my trainer said this she meant that Border Collies and Jack Russel are SO GOOD at agility that the rest of us would have a hard time competing against them. It was partly a joke.
Here is a link to information on Portuguese Water Dogs: http://en.wikipedia.org/wiki/Portuguese_Water_Dog
And from that same site:
In Portugal, the breed is called Cão de Água (pronounced Kow-the-Ah-gwa; literally "water dog"). In its native land, the dog is also known as the Algarvian Water Dog ("Cão de Água Algarvio"), or Portuguese Fishing Dog (Cão Pescador Português). Cão de Água de Pêlo Ondulado is the name given the wavy-haired variety, and Cão de Água de Pêlo Encaracolado is the name for the curly-coated variety
Sorry, I don't think the lady who breeds these dogs and trains my sister's dog in agility is a member here and even if she was I don't she speaks Portuguese.
The hours you need to work with your dog are not chipped in stone. It's just that the higher energy dogs who do seem to do well in a sport like agility tend to need more exercise. My own Lab boy, at about age one to two, absolutely needed an hour of running off leash in the morning and another at night. Now, at age three, an hour in one day is a short day for him. I think the point most of us are concerned about is you can't just slot the dog into your timetable and expect it to work. The dog may, is likely even, to require more than you think.
Not sure, this may be a language problem, but obedience and agility are quite different disciplines. It seemed to me you wanted a dog to do both with. That is a lot of work, and expense. Going to competitions is expensive, mostly because of the travel costs.