Budget Range: $1000 MAX, Prefer $800ish unless there's a massive diffrence in performance/future proof before rebates.
Only really want a 500gb hdd, could go with 1tb but no not really needed, would like to include a SSD in the build, size not important.
System Usage from Most to Least Important: Leauge of Legends, WoW, Youtube, Basic Video editing with Vegas, Streaming movies
Parts Not Required: keyboard, mouse, monitor, speakers
Preferred Website(s) for Parts: No idea.. Preferably something from australia?
Parts Preferences: No preference, Simply want the best, reliable build for my $
SLI or Crossfire: I honestly have no idea what this is.
Additional Comments: I Honestly know next to nothing when it comes to computers, i just enjoy using them, when it comes to Hardware im basically useless apart from putting it together, i want the computer to be as future proof as it can be without compromising reliability or busting my budget
Unfortunatly, ill be buying it peice by peice, because im one of those people that, If i have money in my pocket ill spend it, so im just going to get a build list and buy a few peices here and there till i have it all :3
As for finding price parts, this has been really useful. Though its not perfect and may miss a website. Just take my suggested part and paste it into the search bar with your state, it'l figure out the cheapest place to get it. http://www.staticice.com.au/index.html
For LoL, your really not gonna need much graphics power. You could get high settings on your ivy bridge integrated graphics. Not sure about WoW.
I agree with the list above this post, thats a nice collection of stuff. Maybe instead of the vertex 3 you could get the agility 3, almost the same speed and cheaper. Also maybe look at radeon 7000 series and geforce 600 series instead of the 6870.