Monthly plan for china.

[naco]

Hi everybody.
I will be spending an year in China and i need to know which plan to subrscibe.
I need 3g, so the only operator I can choose is china unicom.
Basically i will be using:
-More ore less 500mb-1gb internet
-Free incoming calls, at least in my region
-Some calls to china (also long distance, since i may be using some scratchcard with a chinese number to be called), 200 minutes should be ok
-Few sms to china
Anyone knows how to find such a plan on china unicom's website, which is pretty difficult to understand, even using google translator?

Thanks in advance!