It is not insane to have a 3 month lock-up. The Hedge Fund market was valued at 3.53 trillion USD as of November of 2018 (which is an order of magnitud above the whole crypto sphere). Hedge funds usually have a lock-up period between one and three months. Real investors don't mind it only short term speculators do.

The real question is what type of "investor" do you want to target.