[Build Help]YouTube LPer lookin' to upgrade

.o/

Hey guys, I'm a (not that well) known Let's Player that's probably about t' go full time into it. I told myself I wouldn't do it until profits from YouTube were able t' pay for the PC needed.

...Well, I think they have.

I've got about $2,000 I can use to get a new box with wires comin' out of it. But I'm not exactly the most knowledgeable on what t' get. So any help would be truely appreciated!

As for needs:

• I need to be able to play/record games. I don't expect highest quality, but playable. My main game is Minecraft, and currently play modded versions that can get a bit resource intensive. I currently use FRAPS and Audacity pretty much solely.

• I must also be able to render said games. I currently use a older version of Sony Vegas.

• I would like it to be able to support at least 2 screens, preferably 3.

• I need to buy both main unit, main monitor, keyboard and mouse, and any OS/software that is deemed needed. I'd like to be able to afford a half-decent mic, but if I need to buy that later I can live with that.

I'm sorry if this is a very noob post, but one of my main problems is picking/choosing even where t' start stuff. And the choices in a PC? Well...I'm completely stumped. So please forgive this feeble brain and help a guy out, will ya?