If you know how to do it easier, please share?

How to do it in a simpler way?

It is possible to modify the drawing mode and see the rendering of the 3D view without recompiling the source code.

First of all you have to use the JAR version of Sweet Home 3D with the command line Then add [font=courier new]drawingMode='OUTLINE'[/font] after the [font=courier new]<environment[/font] tag in the Home.xml file of your project.
To edit Home.xml, change the extension of your project ".sh3d" to ".zip".
You must repeat this step for each new project.