Honestly I feel like you're limiting your early waveclears on some champs without
or on the likes of Kog,
.
You're also forgetting to leave room for a defensive item.
Vs a CC heavy tanky team with little AP threat and no Zed, I'd probably pick a Kog with

Why would I take these? Triforce has amazing synergy with Kog'Maw, obviously core.
Bork to deal with the heavy health and get some early sustain.
LW for armor pen obviously, IE for crits.
The two weird ones: Why distortion enchantment? For starters, it's for your flash. Having that escape or kill pressure up 20% faster can be huge, and you usually don't realize it until you start using flash offensively more than defensively - but it's huge. The banshee's provides health and MR, which is nice I suppose, but what you're really looking for is that passive blocking a spell. Namely a CC type spell as you should be positioned as such that that's all that's going to hit you, banshee's blocks it off.
If you require Tenacity,
should be your go-to, not Merc treads. It's simply more gold efficient for an AD carry to be buying.