Building a PC as a student

Hey guys

I am building myself a pc for mostly gaming and some video editing and a bit of 3D blender stuff.

My specs are-

RYZEN 7600X

MSI B650M GAMING PLUS WIFI MOTHEBOARD (DDR5)

G SKILL TRIDENT Z5 16GB X 2 KIT DDR5 6000mhz

MSI MAG 750WATT 80 PLUS GOLD POWERSUPPLY

WD BLACK SN770 1TB SSD

CRUCIAL 500GB SSD

ANT ESPORTS ICE 360MM AIO

ANTEC C5 ARGB CABINET

I am confused about what gpu to choose. I am thinking to buy a used gpu for around 30k the gpus available currently to me in that budget are AMD RADEON RX6800 16gb and RTX 3080 10gb.

As I have said above my main usage will be for games such as GTA 5, RDR2, Cyberpunk 2077, Msfs 20/24 and some valorant. And some softwares like blender, DaVinci, premier pro, and After effects etc.

Would be a great help If you guys could help me.

Thank You

EDIT: Thanks a lot guys for the suggestions very much appreciated, I have decided to increase my budget and get just a 4070 super 12gb variant😂.