[DAV Spoilers] In the first act how would you make Solas' plan better?

So in the game Solas tell Rook that the ritual to move the gods would have killed 1,000s because of the demons being released. People died and with Rook messing up the ritual 2 God's escaped.

If you were in Solas' shoes how would you improve his plan for minimal life loss and Rook not interrupting you? I'm sure thinking more than 10 minutes we can beat Solas' plan he took ten years to come up with.