u/RBG-96

So I have just updated my build and I have a Asus Prime 9070Xt OC and a i5 14600kf with 32gb of ddr5 6000, with this I am wanting to update my monitor and I do not want to buy a monitor that is not fit for purpose, I am looking at 3840x2160 and 2560x1440 I just want to know what makes most sense with the build I have, any suggestions welcome, Thank you guys.

This may be a stupid question but I have just got the 9070xt and I have had to put 3 separate cables into it as it is a 24 pin connector, I am wondering if there is a cable that is all together so it doesn't look as messy and white preferably?