imo if you build 70% crit chance and you catch all the blades, you'll be unstoppable. And what I've seen from the spotlight, catching the blade shouldn't be a problem seeing as you're able to guide them.
Just hope your crits proc and you catch your blades, GG.
then just regular AD carry items, along with some survivability.
But if your passive doesn't do much damage, why focus on crit? I'm just going to build him like a normal ad carry, so IE into PD or something.