Alright I could see that I guess. It still doesn't change the fact that there are better items to be taking instead of that soul shroud. As for the second build, I don't understand why black cleaver is part of it. Urgot's damage doesn't come from auto-attacks and his acid hunter doesn't apply the on-hit effect. Other than for pushing down towers I see no point in getting something that expensive.

The point of getting the shield early is so you can chase, not so you can kite(though it helps with that too). Yes, you should be keeping your distance. That also increases the chance of not getting all of your acid hunter shots off. If you slow with terror capacitor you have a better shot at getting everything to land properly while you're chasing AND it gives you the ability to kite if you need it.

Spell vamp is from all ability damage. Acid hunter gives most of the spell vamp healing.

Are you using Noxian Corrosive Charge for spell vamp? I don't find it very useful

You misunderstood the timing for the items section. A lot of the problems you listed don't even come into effect until 40+ minutes. Components for legendary items are not the same thing as the item itself.

As far as skill sequence goes, it's all a matter of personal taste. I personally keep my distance fairly well so shield ranks do basically nothing.

I've tried something like this before, itemwise and getting Youmuu's Ghostblade honestly isn't that much of a help to him. Last Whisper is a far better choice in terms of armor pen and since you already have that a defensive item would be amazing like Banshee's Veil or Frozen Heart especially since it has good synergy with your Manamune. Also I think Soul Shroud should be left to a support to take. You'll have enough mana regen from your other items ( Manamune) that you shouldn't need to worry about mana problems ever.

Also you need Terror Capacitor maxed much earlier. The slow + Acid Hunter is more effective than the extra damage from Noxian Corrosive Charge.

The guide and tips were well written and accurate, but the build is off. Just my thoughts.