Mater's Workshop.. Way more computer than you need for RU-vid.. When I was using windows based computers all I have was the cheapest off the shelf desktop and laptop and they worked just fine for RU-vid. I never had an issue with them not being good enough or fast enough for editing videos, uploading videos, uploading them to RU-vid or doing livestreams with 6 or less people on panel on the free version of StreamYard. But it's your money to spend like you're rich if you want. Oh yeah this video is short enough to be a "short". In your editing software just change it from 16x9 to 9x16 ratio and re-upload it to RU-vid as a short. That is if you want to. But you already knew all of that, right?