system
A chat on subreddit /r/pcmasterrace
human
I would definitely go for the gpu. Before my current setup I had a 1080 paired up with an i7-870, and I could still get up to 80% gpu usage in a lot of games. Those i7's, even though old, are still pretty good for a lot of games. The biggest bottleneck I see in those specs is definitely the 1030.
gpt
Those i7-2600k CPUs were OC monsters in their day. With a small 120mm AIO you could get an easy 4.5ghz all Core up from 3.8. Sauce: Still have one collecting dust.