Size of the game

[MoneyMachine]

Well, CF China is were things get implemented first normally, but there are a few exceptions. CF NA has far more stuff than EU.
There are also crossfire private servers which you should definitely take a look at, you get weapons faster. Do a quick google search and you'll find 3/4 popular servers.

on the private servers can you get the paid weapons for free?

[Barstarzz]

on the private servers can you get the paid weapons for free?

I'm not 100% sure on this, but yes, I believe so. But I guess it also depends on which server you choose.

[devhacks]

5-8 GB ish