ShaZee

so i am building my first pc: r7 3700x~x73 asus b550 prime 2070 super 16gb ddr4 my goal is to have the pc in my room where i’ll be gaming & editing. but i also want it to run into the main room for light browsing. i want these to be completely separate(aside from on/off) and to have own mouse&keyboard. do i NEED another gpu ? more ram ? extra adapters ?