well i put hawkshot that late because it become usefull at the end of the game when team fights beging.. and the money if u're in mid u can get it verry quickly if u let ure enemy push enough then u can slow him and kill him before he can return back.. so u will b farming money verry well.. i use this build and it works really well 4 me.. u can try it and let us know how it goes :D ;)

Maybe so, but unless you're successfully ganking lanes left and right, the build you have is kind of expensive, so you need all the gold you can get. lol

Hmm i think its waste of 2 points that u could use for frost arrow or volley because only 1/2 extra gold per kill isnt rly that usefull in my opinion :P.

No points in Hawkshot at all until that late? Ashe really benefits for last hits for her early game, at least putting 1-2 levels on it early will help with getting extra gold; along with the Philos Stone you get.