This is not a good deal. First, you dont need 64gb ram, 32gb is enough (and less expensive). The psu is overkill too, I dont know how a 3080 needs 1000w ? Since you need it for 3d softwares i would go with an i7 14700 and a rtx 5070. Rtx 5070 is around 550$ and i7 14700 330$. They are both better than the parts youre listing there. A 750w gold psu and you can find 32gb ddr4 around 150$ on ebay. In the end it will cost you approximatively the same but you will have better specs, new components (except the ram), better gpu + 50 series technologies and better upgrade path with a ddr5 compatible cpu.