Hardware required to hit 144hz @ 4k resolution

I'm at a bit of a crossroads and would love some opinions.

I have had the same GPU for a number of years, and recently did a system rebuild reusing the same GPU. My current build is;

CPU: i7 10700k
GPU: ASUS GTX 1070
RAM: 16GB Corsair Vengeance 3200
MOBO: EVGA Z490
PSU: Corsair SF750
HDD: M.2 Corsair MP500

I recently purchased a 27GN950 4k monitor capable of running at 144Hz.

Currently with my GTX 1070, I'm looking at anywhere between 100-130 fps on Ultra settings in Dota. I'm looking to get a stable 144hz experience in 4K on dota. When I check my system monitor, the CPU is at like 20% utilisation and the GPU is virtually at 100%.

Do you think a EVGA 3070 Ultra will get me this? What type of Ultra settings 4k fps performance would adding a GPU like that to my system could I expect? If not, what GPU do you think will get me 144 fps consistent in 4k without being wasteful?