The 960 is a good card and should let you run very high settings so it should look good on your 55" tv, assuming it's a good quality tv. IMO though you'd be far better off grabbing an i5 4690 and saving $100 and putting that same $100 into a GTX970 or if you want to keep the 960, get the i5 and save the $100. The i7 is dramatic overkill for the 960 card.
One of the huge advantages of PC gaming is other games beside Project Cars. iRacing, R3E, Assetto Corsa, Game Stock Car, RFactor, other sims, SpinTires, Wreckfest, Euro Truck Simulator and more, are all great, fun, driving and racing games you can't find on console. I play AC a lot and one of the bit things over there is modding. Dozens of tracks have been added to the game by the community all free of charge and a couple of dozen cars as well. All free although not all AAA quality for sure. I don't know about modding in Project Cars however, hopefully a member wanders in and can fill you in on that.
Although there are still clowns in open lobbies, I think the quality of driver is much better on PC. Not skillwise, but in terms of respect for each other and the desire to race clean. At least that's my experience so far. Gaming is also free on PC, no monthly fees like on console and often cheaper to begin with. Older games that are still good are often really cheap, like $10 or less on Steam.
Communication in PC games is via headset and third party software like
TeamSpeak It's free and highly customizable and offers clear communication between drivers. Not sure if Project Cars has their own software on PC but I doubt it, no sense in recreating the wheel.