What laptop components are needed for max settings

So I currently play on a PC and am able to run with max settings. In the semi-near future I will need to move that computer to the basement so that I can repurpose the office into a bed room. When this all happens I'll need another way to play upstairs in the bedroom at night.

I've looked at various laptops, including custom builds, but I am not all together sure exactly what I need to run at max settings like I do on a desktop. I am attempting to price this out versus the NVIDIA Shield (with all the network upgrades I'll need) or potentially a PS4 with remote play to a Vita.

All that said, if you were to buy/build a laptop specifically to play this game at max settings, what would you need to put it in?

Thank you in advance for any assistance.

My current laptop runs this on max @60 fps, only time it dropped to 40 was during behemoth pop @ coerthas with hundreds of people flocking over like mad men lol.

Setup includes
i7 3rd gen
16gb ram
256gb ssd + 1 tbh storage
7970m x2 in crossfire.

With all that said, it IS portable and I do travel with it but it isn't as light as my wife's chromebook so don't think u'll be playing in the park :P

Out the door u're lookin at $1900-2k ballpark if you go with Sager, which is what I have, and a few hundreds more if you go with alienware.

2k isn't bad at all, certainly cheaper than some I priced out. If I wanted NVIDIA instead of the 7970's in crossfire, what card would you think is comparable to what your running?

The only portability I care about is going to my bedroom so that I'm not constantly tucked away in the basement :).

I'd go Sager, SSD, i7, but SLi not required