Be very careful that the people who help (miraculously) aren't obliged to have their name put up. I'm sure some people wouldn't mind it, but I know a few who wouldn't want their name publicly put up. Just putting it out there.
1.) You need a lot of support to make this "epic" video. Everybody wants to see it, nobody want to commit to it. That's just how it is. Meh...
2.) YouTube allows only a ten minute time limit for each video, so it'd be best if you made these videos in a form of a series. Or if you made your own custom video (which iI'd suggest you made) then you wouldn't need to worry about this.
3.) All of the things you want to be in the video(s) don't seem like a lot of things (In my personal opinion). Add more things to it, and make people appreciate it more to show Shaiya's "unique" variation.
What exactly do you want to accomplish? A PvP video, a movie, etc. There are several genres you can follow, and it'd be best if we knew what it was, then you could focus more on what you need, and what is "worthless".
4.) You have a "Good Luck" from me.