All very good questions and a medal for bravery to you. I'll be watching this thread with interest. All I can contribute is that I would go with transmapped hair rather than the hair room. Buy a versatile hairstyle with lots of morphs.

Poser 11 Pro, Windows 10

Auxiliary Apps: Blender 2.79, Vue Complete 2016, Genetica 4 Pro, Gliftex 11 Pro, CorelDraw Suite X6, Comic Life 2, Project Dogwaffle Howler 8, Stitch Witch