Help on Purchasing Laptop Choices.

[KatoKinko]

I'm looking to buy a laptop so I can play FFXIV:ARR when I away from my Desktop for any reason. I'm looking to buy a nice powerful laptop but I need help with with a few choices.
I'm asking for help because unlike Desktops, Laptops are not easy to upgread and what you get is what you get normally with Laptops.
I know the game is VERY customisable and runs a lot better then 1.0. I'm hoping to find the right build that will give me the highest settings I can get, while getting alot of FPS.
The screen I'm getting can display 120hz and 3D. Size 17.3" Full 1080p.
I found a nice laptop I can build at "powernotebooks.com".

Sager NP9370-3D - Gaming Laptops

Here are my choices:
Video Card - GPU

• Nvidia Geforce GTX 680M w/4.0GB GDDR5 Standard
• Nvidia Geforce GTX 680M w/4.0GB GDDR5 x2 (in SLI) +$650.00

Processor

• Intel Core i7-3630QM (2.4~3.4GHz) w/6M L3 Cache - 4 Cores - 8 Threads Standard
• Intel Core i7-3740QM (2.7~3.7GHz) w/6M L3 Cache - 4 Cores - 8 Threads +$170.00
• Intel Core i7-3840QM (2.8~3.8GHz) w/8M L3 Cache - 4 Cores - 8 Threads +$355.00

I would like any advice I can get. I want to be able the run the game the best I can without spending a lot of $$$! I would also like to know if any of the CPU's will give me a "bottleneck" with the SLI option?

P.S. I'm really sorry If this not the appropriate place to be asking this.