good luck with your purchase I think my advice has gone as far as it will go, maybe someone else will offer their view as well.
But your last question I dont know how well it will run that game as I dont know how demanding and optimised that game is, if you happy with 30fps there is a chance it will be ok.
I'm sure I will be happy with 30fps if it looks spectacular. I've said that up thread in relation to DriveClub. I've also mentioned that I believe racing games to be far less demanding than say, Crysis or Assains agreed.
Here I am attempting to enter the PC market and your general demeanour is slightly (intentional or not) condescending. You should be more than aware of the law of diminishing returns. The 970M gets some great write ups if you aren't bedroom bound hardcore with your PC gaming. I would love to hear you say "Mate, it's not bleeding edge, but for what you want it will probably be fine if you don't mind 30fps. And hey? It's upgradeable if you find it doesn't quite live up to your expectations." That's a more welcoming approach to a non pc gamer. It's the glass half full, not half empty approach that would make your advice more palatable to a newcomer, rather than technically intimidating.
I'm also a big boy and very capable of raising a family of three kids, running my own company and being a go to source of technical advice for many local colleagues in my industry. I don't need somebody to point out the integrity of manufacturers or their marketing. I'm more than capable of looking after myself in that respect, but it's the thought that counts so thank you.
On topic, your barebones advice is appreciated. I just don't think we are on the same hymn sheet. If you could explain the difference between Max/Ultra and Ultra HD in real terms, and in terms of display size, that would help me understand where you are coming from, image quality wise. For example, if I take your advice on 4k needing the detail to be reduced dramatically, would (as I was hoping you were going to address earlier) ultra @ 1080 (if there is such a setting) deliver comparable results on a 40" display? Would I even need to worry about 4k at the size?