Are there some good prior launch campaign examples to look at?
Look in the announcement forums, there are a lot of them. WAVES was really successful at funding, so was DAO.
Both Waves ([FACT] WAVES = ICO SCAM -https://bitcointalk.org/index.php?topic=1530926.0) and DAO (hacked, as a result created split in the ETH community, hard fork) at some point failed.
They are examples of overhyped marketing and crowd mentality taking over reality.
Op, if you don't have something extraordinary in mind, then it is better to not start another ICO.