Asus ROG GL502VS question

[Pulsarite]

I'm thinking of buying this laptop: https/www.amazon.co.uk/Asus-ROG-GL502VS-DB71-HID1-i7-6700HQ-2-6-3-5GHz/dp/B01KFG3PVO/

I'm not particularly clued up on laptops, been using gaming desktops for awhile but am travelling around a lot more now, my current desktop machine is pretty dated, (i7 2770k, 8GB RAM, GTX960, 2TB HDD.)

What I want to know is whether this laptop will work well with my current dual-screen (1080p) setup at home, whether it's worth the cost, (should I spent £200 extra for a GTX1070 rather than a 1060 and 16GB more RAM?), and whether these custom upgrades to the base model are any good - I know the base model of this laptop got a good review on this site but how reputable are these third-party upgrades?

 

[JinHue]

I think dual screen is not an issue; be careful about poor build quality;
I bought this laptop three months ago and has returned it more than 6 times! Two weeks ago I returned it because of dust under LCD screen. I advise you not to buy from somewhere that you might experience difficulties with returning for defective parts or manufacturing inaccuracies.