I use FSrepaint v2.  It is great for viewing and moving the 3D model.  It save you from having to export all the textures in FS9/FSX format then opening the sim, selecting the aircraft and loading it up.
You can use the editor in FSrepaint or set the options to use the editor of your choice.  It also allows you to see the repaint at night and in all lighting conditions.

Any questions just ask.

Dax