Conqueror will give you the damage that you need to fight generally all 1v1's pretty evenly throughout the game and it is just one of the strongest picks for DPS Bruisers or Fighters in League at the moment.

A lot of people take Legend: Alacrity on Yasuo because the extra DPS might seem appealing, but the lifesteal from Legend: Bloodline feels like its a better pick since you're going to be building attack speed anyway, and the lane sustain you get from Legend: Bloodline will mean you won't have to deviate from rushing a Phantom Dancer to get a lifesteal item as a form of sustain.

Triumph and Coup De Grace make you harder to fight in general.
Conditioning gives you free tankiness at 10 minutes and amplifies your total armor.
Overgrowth will essentially help you get tankier quicker to further push you into your hybrid-tank status.


As for the "Seals", I chose attack speed in the first option due to the fact that it makes up for some of the attack speed you would've gotten with Legend: Alacrity. I chose the Adaptive Force over armor in the second choice because it is more gold efficient than the armor choice. In the third choice, I took armor over HP since most matchups in top (Bruiser Yasuo is generally better in top lane) you're just going to be harder to kill early game with the extra armor, and the extra health won't really make the difference early (15 bonus hp isn't much early) nor will it make the difference late game (90 bonus hp isn't much late game).