If it doesn't make sense story wise then I go with what makes sense story wise.As low as it'll go. SSP lets me set it at 9...but some games actually ask "Are you sure? This won't make sense story wise...."
I gotta agree with youDefinitely with whatever seems canon. Though honestly very few games I ever see that number after inputting it at the beginning anyway
Never get why devs go the makeup route (with obvious goth exception) just make a better model lollook at model, although sometimes it's hard to tell then dev slaps ten layers of makeup on them