Hello from Jersey!

Hi everyone I am new to this site and the cafe racer world. I have been racing motocross forever, but never owned a street legal bike. So, I purchased my first bike a few days ago for $900 (I am 19 and still live at home, my mom is pissed). It is a 1973 Honda CB750 bored and stroked to an 836. It has been sitting for a year so I cleaned out the carbs and just need to finish all the wiring and it should start right up. I thought this would be a great platform to start building my bike. It is something I have always wanted to do! I am open to any advice right now and I am really trying to find a badass seat, so what seat should I get?