If you want more attack speed then trade in a "Hextech Gunblade" for a "Phantom Dancer". I recommend the Phantom Dancer if you're going into the the enemy base but the double Hextech Gunblade if you are going jungle and/or support for your team.

The skill sequence that i picked out is really to help locate the enemy team. the Hawkshot ability +4 gold per kill helps out not by much but still does. If you want to do more damage then get small amount of gold then switch out Frost Shot and Hawkshot around.