What do I need to upgrade on my pc to start editing 4k

Hey!

I need some help to figure out what upgrades to get for 4k editing in Premiere Pro. I bought my pc to use for gaming and have no clue what so ever, if its okay for editing or not.

My PC:

Intel Core i7 6700K

Msi Z170A Gaming M7 Main Board

Corsair Vengenance Lpx 32GB DDR4 2400MHz ram

Gainward GeForce GTX 980 Ti Phoenix

Samsung 859 Evo 250 GB SSD

Seagate Barracuda 1TB 7200 RPM HD

Fractal Design Kelvin S24 watercooling

Fractal Design Newton R3 800W