How does kogmaw have time to fully utilize his max attack speed with w , and do triforce procs? Not a good item on him after his changes.

I think it's a pretty solid guide. I might max W first for range and damage output, but the new Q passive is good so I see your point. I prefer Bounty Hunter over Oppressor and Warlord's Bloodlust over Fervor of Battle, but that is more my style. I like Savagery over Wanderer as well because it will help you last hit those minions and is especially useful under tower. Secret Stash is also preferred for me over Runic Affinity because of those potions early game getting buffed to keep you alive.

I really like the item sets and feel it is well thought out. The runes are excellent and it is a good first guide. Summoner spells are good and standard.