Play the way you want. I'm at 84% now cos I like the external camera eye candy and could not be arsed doing manual targetting anymore. Tried it, worked out how to do it then thought bugger that it takes too long to keep playing that way IMHO.
Anyway 0% is a great starting place as it will allow you to get all the GWX good stuff as Bookworm has pointed out whilst getting you used to how the sensors etc work.
Have fun and Gute Jagd!
