That many carbs make Baby jesus cry. You're not active, cut those calories to the 3000 or so mark.
Protein 1.5-2g/lb of body weight.
Get at LEAST 100g of fat a day.
600g of carbs? I'd be 350 pounds with that much
"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents... some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the light into the peace and safety of a new Dark Age."
-H.P. Lovecraft