The choice of an nVidia video card is not wise: it costs a lot and the
performances of its free driver are not on par with the cheaper Intel
integrated chipsets.
The component that is the most likely to raise issues is the Wifi card.
Ubuntu includes, in the kernel it distributes, firmware that are proprietary,
hence excluded from Trisquel that uses linux-libre.
The safest option probably is to buy a laptop from ThinkPenguin. It can even
be shipped with Trisquel installed. The guy behind this business is committed
to freedom. He often contributes to this forum.
Given the high requirements of the laptop you desire, the closest laptop, on
this site, is to be customized from this page:
https://www.thinkpenguin.com/gnu-linux/penguin-international (however the
maximal amount of RAM, which is proposed, is 8 GB). Notice a commercial on
the Trisquel website that makes your purchase on ThinkPenguin generate a
donation (25% of the profits) to the Trisquel project.
Unless you really need a horse power for some specific tasks (which ones?), I
would recommend you to stick with cheaper hardware so that you can afford to
change it more frequently.
