What a nice premise!
Look, I'm a professional translator and I would love to translate your game into Portuguese and Spanish.
This is essential to expand your audience. Think about all the big brands of the industry, they are all over the world because of their translations :)
Don't worry about the budget, we can discuss a comfortable point for you and for me. :)
You can check my portfolio here and here is a side project I have translating open license RPGs (not your case, but you can check it anyway).
So, how does it sounds?