Tbh, this guide isnt bad, but it is so similar to other guides.

But, i like the preference of ghost, instead of flash, since Lee have 2 jumping abilities, and i think thats enough.

Second, your jungling route is maybe not the best choice, i jungled with lee 15 games in a row, and won all of them. I start with double golems, wraiths, wolves, then blue, and take the blue in the start, for nice energy regen, then, u gank bot/top, depends which side you start on, since then u have all 3 abilities, and the enemy thinks ur still jungling after 3-4 minutes ;) I would also choose to go for armor and 5 x pots, instead of lifesteal, both for survivability in ganking, and in jungle, but that's my opinion.

After Merc Threads, you should get phage (as listed in guide) but build it into trinity, it has nice speed, slow, and extra dmg.

I wouldn't recommend the atma's, because Lee can manage himself nicely, without any extra dmg after warmogs, so i would recommend some MR or Armor after WA. Maybe GA right after Warmog's. And if your team lacks some dmg, go for Last Whisper, it has nice dmg, and armor pen to take enemy tank down ;) But after all, nice build ;)

You might want to take flash instead as it is IMO more versatile then ghost for lee sin. A flash may allow you to have that perfect ulti that screws up the enemy team. Ghost does not allow that.