May want to consider losing the Fan and the Hallucinates too. I don't believe either are commonly run in Quest Rogue. Backstab got taken out some time ago, but as Pirates/Aggro Druid have gained popularity it's made a return.

If you're just getting flattened by aggro, Tar Creeper has been making it way into some more defensive versions. Glacial Shard is also pretty much mandatory, it's such a powerful tool for pinning aggressive decks while you get your quest completed. Bilefin Tidehunter is another powerful card I would recommend - late game it's 2 5/5 minions for 2 mana, one of which has taunt. And the original can be Shadowstepped back to generate more minions.

Speaking of, you need those too. It's two more bounce effects and is far superior to the bounce minions since you can replay cards for 0 mana. If you want turn 4/turn 5 quest completion, that's how you get it.