I'm not great with hunters, but you may try moving your points all into marksman. Try something like this?
http://www.worldofwarcraft.com/info/classes/hunter/talents.html?0000000000000000000000555251055010053102000000000000000000000000
Maybe another hunter could comment. Also stack Agi and AP first, with a little mix of int and mp5 for mana.
I could be totally wrong, but thats what Id do. Roll a warrior and Ill be more helpful