Need advice for a ~$1000 build for GIS/3D Modeling

Hello! I have absolutely no computer building knowledge, but I think I'll need to build a computer to get it to do what I need to do (below)... so I'm hoping some of you could help me?

Approximate Purchase Date: Before the end of the year- preferably whenever parts are on sale.

Budget Range: up to $1000 after rebates (but preferably less, ideally under 700$)

System Usage from Most to Least Important: modeling using ArcGIS, Photoshop/digital illustration, 3d Modeling/animation (Blender), word processing/internet, possibly gaming (but not critical)

Are you buying a monitor: Yes: planning on buying a Wacom Cintiq 24HD Interactive Pen Display and a second large-ish monitor (type not decided yet) (have other money set aside for this).

Do you need to buy OS: Yes- planning on Windows 8 (don't need to factor price into budget)

Preferred Website(s) for Parts: no preference, whatever you recommend!

Location: City, State/Region, Country: Chico, California, USA

Parts Preferences: no preference.

Overclocking: No?

SLI or Crossfire: No?

Your Monitor Resolution: no preference, probably as big as possible

Additional Comments: Quiet would be nice. Primary purpose is for art and GIS modeling with some gaming.

And Most Importantly, Why Are You Upgrading: My current laptop is not capable of running GIS without freezing and the screen is just too small for illustration work (which is paying for my graduate studies), so I figured its time for an upgrade.

Thanks for any help!