Yes I build my complete model to scale in the 3D application usually using inches for small things and decimal feet or meters for very large buildings. The only time I worry about Poser is after I have finished the model and converted everything to mesh objects and am ready to export to Poser. I just do a "Select ALL Meshes" and scale the whole thing down using the global center (0,0,0) as the scale center. The factor will depend on what units I used to build with. If Inches (which it is most of the time) the factor in Rhino is 0.0104167 - if that is too much math for you, you can always copy/paste that number into a text document then copy/paste it back into the scale function when you need it. That is ALL there is to it. Each program and export system has only ONE factor that you need to know. Once you know that number for your setup you can forget everything else and enjoy your models in Poser.