squarespace css customized code

hello there, i am wondering if you are able to help me, This is the request: javascript or CmS code injection to alternate a squarespace site. everything is set to launch but couple of things i want to customize it: 1) index page is only on manual scroll now, I want it to auto scroll along with the background image. if you see my screengrab, all those big dark type, would highlight itself to white every 7 seconds, and the background image will switch. But when it comes to the ones below the fold line, you have to manually scroll up to see the rest, so I want maybe slowly scrolling automatically, like 10 px per second, or every three titles, it jumps? 2) Also I want to see if it is possible to ditch the logo header limit, place my logo on the left height max responsive to the height of browsers of tablets and desktops. auto select white when the background is dim, if background is bright use the black logo. See attached files, and for mobil, i want it to sit on top horizontal like the screen grab. let me know if its possible? The new logos doesnt need to be function or with hot button, i just need it superimpose on the site to make it huge. So at the end the header will only have the navigation INFO, social icons, and home.