I've been trying to make a good Nasus build for ages now and im thinking of crit nasus.
Boots of choice (depending on enemy team Tabi, Merc or Lucidity)
Infinity Edge
Warmogs
Bloodthirsters
2X Phantom Dancers

This makes you have 85% crit chance and lets say you have 286 base AD. 286+110 (your q base damage) +300 (from your q farm)=696. Infinity edge passive can make you crit for 1740 and let you lifesteal back around 696 health. And you can do this every 3 sec if you get lucidity boots. This isn't counting any armour your enemy has but as nasus you would wither the enemy adc/apc (who has pretty low armour) and 2/3 shot them. With this build, Nasus can also be an offtank because of his awesome ulti and warmogs. He can also be kind of an anti-tank because his ulti does % damage.
I wanna hear your thought on this build and plz gimme any suggestions on how thi build can be improved.
This build is not a build im gonna use for serious/ranked games because this is a super late game build. Usaully when i play Nasus my team is 4v5 for 25-30min cause im farming my q.

No, you're better off going with farming Q and buying some late game armor penetration. Nasus gets most of his damage from his Q and his ultimate. I'd recommend only playing him in top lane due to the fact that trying to last hit with Q in jungle is a pain. That's not to say that jungle nasus isn't viable, but it's not easy.

finally somebody who agrees crit chance nasus is more beast than tank nasus

This is an old thread. Nasus' Q could crit a few months ago, and it was broken. It was in fact a bug they fixed. They also made the QoL changes which let jungle nasus get more farm for his Q from jungle minions. This has made him more viable by increasing both his Q farm and clear times. The game can change alot in three months.

Tank Nasus is better... The fact that he can't be killed unless enemy team is a heavy CC team he can do what ever he wants.

I prefer to go tanky Nasus. Iceborn Gauntlet on him as a first item is obnoxiously good.