A very similar list and idea to my Wiazard rush deck that I've been playing.
Naru Meha is definently a high risk/ reward card. But it has single handedly one me several games.
I would look at considering a couple of
Fight with Fire's.
3 mana 5 damage to target creature, or 9 mana with a kick and deal 10 damage split across the field however you like.
Lightning Strike is a tough card for sure, but I've found having a late game 10 damage to my opponent, or a big sweaping board mid-late game to be so flexible.
Even just dealing the 5 damage to a target creature has been a big saviour.
It is a sorcery, not an instant so I personally don't run more than 2 at a time.