Hello Jenniky,
Sorry, I don't know how the papers we have here compare with papers you have there. Greaseproof paper is what we use for lining cake tins and wrapping food - you probably have exactly the same thing but call it something different. Just use whatever paper you find best! Provided it has no print on it, is strong and cheap, try it out.
As for freezer paper, I had to ask in a quilt shop what it was...
Perhaps I need you here Jenniky to recommend a paper available in the States...