You need a large release, you need to spread the wealth, and you need to have guides make it super easy to mine as soon as it comes out in order to attempt to gain a strong foothold and maybe even defeat your competition.
I plan to develop it so it's easy enough to use before releasing it. I'll probably run it as a test net with a few other volunteers to make sure stuff works at first. Then once it's good officially release it and get going.
Maybe have a kill switch built into testnet that only I can activate, that way when the real version is released people move over. No incentive to actually try to profit from testnet because I'll just wipe it from time to time when real stuff is released.