Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
J
I would start by buying SketchUp Pro, the Make (free) version is for hobbyists and not for commercial application.
Then I would pick either no. 2 or 3 (your budget dependent), Quadro GFX cards currently offer no advantage in SketchUp.