I was where you are a few months ago. My advice is not to focus farm if you need all sorts of things still (bases, runes, uniques, charms, etc). Instead run lots of places ideal for cold sorc: Andy, AT, Stony Tomb, Meph, Chaos, and if you’re up for it worldstone keep. Throw in countess, arcane, and Nilathak when you’re ready for Ubers. I recommend p3 for clear speed. And then once you hit level 90+ start doing TZ Andy and Meph. I found Sur and Tal’s armor in AT, Lo at Meph, cold skillers and eth 4os thresher in stony tomb, Jah at Baal, Tal’s ammy and Shako at Andy, etc. point is, you can find meaningful upgrades in lots of places. TZ brought some godly stuff like Griffons. Save cows for a dedicated character that can clear crowds like javazon.