Get BC, pick Thydra, Maw, or SG, then build straight tank. I prefer randuin's and Deadman's. FH is pretty good in certain situations because the immense CDR turns his burst combo into a dps rotation.
BC helps multiply damage vs squishies and lets you be relevant vs tanks. Thydra gives decent AD and lets your autos hurt with 3 other tank items. Maw and Sterak's perform the same function vs different comps.
Honestly, you NEED some defense on him anyway. Building straight AD in so cheese but really stupid in a serious setting. He's not like Zed or Talon. Heck, he's not even like Riven or Fiora. He's closer to Jax in terms of mobility, and Jax needs a lot of defense to get going later on.