You gotta really consider
, it's really, really, good on Kindred. The health is amazing so you don't need to instantly pop your ult when an assassin jumps on you, or if a Lux Q hits you.
I say Runaan's second item is a matter of what role you want to play at that time. If you're powerfarming, it's great, as it gives waveclear, but if you're ganking or invading Bork and Frozen Mallet both give much better combat stats as Runaan's only damage is attack speed and some onhit, the crits do about 50 extra damage after all. It is cheap, however.
Bork nerfs definitely hit Kindred, so there's that. Because of them, I'd have to say Bloodrazor with Challenging smite almost always outclasses Bork, although I prefer both.
The PD is a general slot, I'd replace it with Bork (lifesteal) or Frozen Mallet (health+stick). Cleaver is not very good, to be honest, the CDR is fairly wasted as Q cooldown is set if you're in your W, and it's not like you're gonna need to E multiple times. PD itself is a decent fourth item, however.
Personally I hate Cleaver, so I don't build it ever. I already explained why it isn't amazing, though. For health, Frozen Mallet is better, and gives better stick. The damage is only slightly worse, but to be honest, Kindred has plenty of damage with marks.
Challenging smite is gonna outclass Tracking Knife, almost always. If you meet the enemy jungler as Kindred, more often than not you can drive them out of their jungle or kill them, with Challenging Smite being a decently large part of that. It really amps your potential as a duelist and has given me many kills where my target manages to get away (it was a Kassadin) but dies to it's burn anyway.