First of all, no HP/lvl seals. Flat armor is just better.
Secondly, there is no need to stack dorans blades. It simply delays your core too much to be effective. Rushing brut gives you better return for your money.
Thirdly, phantom dancer is not a good item for talon, being a burst ability reliant character, the attack speed and the crit(mostly) are fairly useless when you could fill the slot with, say, another bloodthirster.
Also you don't really need defense if you play him hit and run (which you should be) so just get more AD on your last slot.
Lastly, playing conservatively and farming is not the point of talon. You NEED kills to be effective. You are not a carry. Farming should not be your priority, even early game. Pulling off rake harass is hell easy, and so is cutthroat nox harass. You set your lane up to be demolished, and to get kills, then moving to other lanes to be constantly ganking and getting kills. I can't stress this enough, conservative talon is playing him wrong