Hi!
I think short and sweet is better,. They only look through the CVs whilst the video introduction is being played. And you know yourself, that there could be a couple of hundred people there. That's a lot of reading. I don't think they looked at my CV again after that.
Also, they didn't want any binders or folders, just the pages of the CV. I spent €2.50 decent paper and laid out my CV in two pages, very clear and neat. I just put in the important info about experience, education and a bit about my personality. I also stuck my online application number on the top. Hope that helps.