Need some shopping advice, I'm new to laptops

Alright so I'm moving internationally for the next 5 years and won't be able to have a desktop while I'm gone. I've never really used a laptop for my main computer needs but it needs to happen now.

I'm looking to keep it under $1500.00 or at least around there. It's mainly going to be used as my laptop for medical school but it will also be functioning as my gaming machine (when I have some spare time), tv for streaming in my flat, and as my desktop whenever I'm at home. Gaming-wise I pretty much just want it to be able to run diablo 3 on max settings which is probably the most graphically demanding game I run. I'm pretty knowledgeable when it comes do desktops but I'm completely uninformed with laptops.

Here are a few I've been looking at, but I'm not even sure if they are decent machines, or what the differences are between them. Please feel free to recommend others that are comparable and within my price range.

Oh couple other preferences I have in the machine I purchase.
-I'd like a 17" screen (Or at least somehting bigger than a 15.4" considering this is also going to be our TV)
-I'm not sure if there's a big difference on WLAN cards/adapters but I feel like a higher quality card may help me get better wifi in our residence (I'm pretty sure theres no ethernet hookups)
-Backlit keyboard (not a must but a huge benefit for sure)


$1399.99
MSI GT70 2OC-008US
CPU: Intel® Core™ i7-4700MQ, 3.2-3.4 GHz
Chipset: Intel HM87 Chipset
Memory: DDR III 4GB*3
LCD Size 17.3" Full HD
GPU: Nvidia GeForce GTX 770M / GDDR5 3GB
HDD: 750GB HDD 7200rpm
Wireless LAN: Killer N1202 2x2(a/b/g/n

$1,389.99
MSI GE70 Apache Pro
CPU : Intel i7 4700HQ
Chipset: Intel HM86
Memory: 12GB
LCD:17.3" Full HD (1920x1080), Anti-glare
Graphics: GeForce GTX 860M
Graphics VRAM: 2GB GDDR5
HDD: 1TB (SATA) 7200rpm
Wireless LAN: 802.11 b/g/ n

Anyways, those are the 2 I've been looking at. Purchase doesn't need to be immediate, just sometime before August. Any advice you guys have or suggestions on machines, or even suggestions on which to watch for price drops would be unbelievably helpful. Thanks in advance!