Thesis Character 1: Leera

This is the concept for my first and main character, Leera, and I'm mainly working on her for my Character Modeling I class.  On the right is her first weapon concept, the longbow.  My idea for her second weapon will be a crossbow (as you can see, her left hand is already posed to hold it).

Currently, I've already begun sculping/finalizing the model, but I question how high poly I should go - how much should I leave to geometry and how much should I leave to texturing?..  That's my main problem right now, and I'll have to decide very soon.  My decision will determine how I will carry out the rest of my 4 characters.

Here is the progress on my sculpt in Zbrush.  I made a mistake, I was supposed to split everything in subtools before I started sculpting.  This lets me divide things individually.  

(This photo doesn't show perspective)