How powerful a laptop do I need?

[Alram]

I have some BestBuy gift cards I can use to defray the cost. These look like the best bet at Best Buy. What do you think?

$849.99
MSI - GP60 Leopard 15.6" Laptop - Intel Core i5 - 8GB Memory - 1TB Hard Drive - NVIDIA GeForce GTX 940M - 2 year warranty on parts and labor
click

or maybe the same setup with a larger screen

$899.99
MSI - GP70 Leopard 17.3" Laptop - Intel Core i5 - 8GB Memory - 1TB Hard Drive
click