I will give it a look here but, really you should expect over $2500 and up for a lappy to run this close to max.
I think the fastest chip right now is the nvidia GTX 280M but new ATI mobility chips are due out soon. For all the bells and whistles here is one from Falcon Northwest starting at about $4500
http://www.falcon-nw.com/
that is pretty top of the line right now and would run everything on max without any trouble
Ibuy power has a lappy with a 280M starting at about $2700 but you not have an option for an I7 cpu with that one.
http://www.ibuypower.com/IbpPages/Notebook.aspx
I would not recommend the Alienware lappys myself.
If you prefer to stay with a chip like the 4570 I would reccomend
http://system76.com/product_info.php...roducts_id=101 System 76 makes laptops that are loaded with Ubuntu, not windows but you could easily dual boot that. They have absolutely great, very solid builds and the best customer service in the world. I am pretty sure they ship to Canada now.