What summoner spells do you go for twitch?

I've been really invested into playing twitch and how fun his playstyle is. I am using flash and barrier, but I wanna switch to flash and ghost. Any thoughts on that spell combo? My goal for this one is to have a quick getaway for when things start to get messy and I need a quick escape and also for chase. I love the idea of just running someone down and harrasing them with my E and Passive or Ult. What are your thoughts?