You will save money and it is really easy to build one your self but if you want a pre built,
Change the graphics card to a 1070 then spend the rest on a nice monitor keyboard and mouse (I would get them separate no in the bundle) Get a 1440p monitor if you are into more slow paced games and want the best quality looking picture. get a 144hz monitor if you are in to more fast paced games where frame rate matters such as shooters.
I stopped playing properly since the old chaining system was scrapped. I understand why it changed but I enjoyed staying up late on IRC and having chains going for days long and being rewarded for it.
Not sure what the content is like in your area but in the UK there is a lack of 4k content. So the upgrade is not really worth it. If you have a full HD tele within the last 4 years i would hang fire. There will be a slight improvement due to scaling and the newer ones will have a better contrast ratio.
If you are going to invest in a nice television though have a look at some of the OLED ones.
I missed George Clinton but I will see him in Croatia. The foos missed glastonbury unfortunatly but the libertines stepped in last minute I am a big fan of them. Glastonbury is an unbelievable place there is so much going on you don't get to see everything.
Looking forward to dimensions some techno and disco in an old roman fort.
Chains of over 5,000 lasting over days sat up at 4 in the morning thinking its about to die and someone wakes up and saves it from breaking. It was the most fun I have ever had on this game.