Hawkeye because at gracia dwarfs got a buff named:
Restring
Enhances the string of a bow or crossbow to increase P. Atk. by 5% and range by 100 for 10 minutes.
and Hawkeye also has
Snipe
For 2 minutes, increases user's accuracy by 6, P. Atk. by 199, range by 200, and the probability of critical attack by 20% when using a bow. Movement is impossible while skill is being used. Requires a bow.
So he has 300 extra range and at gracia you can also cancel skills with Shift+Click so you can run also if you want to go and not wait for the snipe to end!