Drop Processor?

[BulletReign]

So I'm just about to buy my new gaming laptop. My sights are set on the Battalion 101 P150EM (2) from Ibuypower. I have it configured with an i7 3820QM, Radeon 7970 2gb Video Card, 16 gb RAM, and 750gb Hybrid HDD with 8gb SSD. I want this thing to last for at least 7 years without needing to be replaced. I will be using it for gaming, 3d modeling/rendering, programming, video editing, and everything in between. My question is can I afford to drop the i7 down to a 3720QM without sacrificing performance, it would save me an extra $200 but I don't know if its worth it in the long run. I want this thing to be a gaming beast and be able to handle all my other activities with ease. What do you think of the setup and can I downgrade the card without worrying?

EDIT: so clueless me didn't know the battalion 101 was a rebrand. I decided to go to the source and get a sager N9150 from xotic.

SPECS:

processor: downgraded to the 3720QM
video card: stuck with the Radeon 7970 since its infinitely better than the Nvidia 675
HDD: dropped to a 7200rpm 750gb and lost the SDD altogether
RAM: went in between with 12gb at 1600

I know it wont last at the top for 7 years but it should at least survive that long... right?