First, I do play at 4k. The only issue with 1080p vs 4k with most modern videocards is how much RAM the card has. 4GB is more than enough to play 4k flawlessly.
Second, Skyrim modded like that is easily current graphically. If you say it isn't, you don't know the first thing about modded gaming.
Third, I just looked through and I actually spent closer to $650 for all that, plus tax.
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