Generally jungle or top. I think a lot of people go 30 defense but you should have at least 21 points there. Hybrid or magic pen marks, armor seals, MR glyphs, something defensive or hybrid pen or MS in quints. Max R>Q>W>E in lane and R>W>Q>E in jungle.
Example top build:
Example jungle build:
I'm pretty sure Liandry's Torment is also decent on him. Guardian Angel and Banshee's Veil are probably decent for some games too. Sorcerer's Shoes and Mercury's Treads are good alternative boots for some games. Maybe Mobility Boots in jungle but I'm not sure how often you'd want to do that.