TBH, my settings are a slight copy of someone else's that I saw online (it may have been on here but I can't remember. I also have a 2.7k preset, but Adobe doesn't have one for YouTube 2.7, so nothing to compare against. That's basically with the bitrates set halfway between that of 1080p and 2160p.
I guess what I really need to know is, is my bitrate too high? From everything I have read, having the VBR 2 Pass is a must.