For me this is the only ponzi kind of site , that can be sustainable , i only think that the maximum investment is too much .
I thought it myself but i have no programming skills
i have been thinking this for a while also myself, all these double sites which which run away or wait 3-4 days for return.
With this game its easy to sustain the flow of investors payouts,
Enjoy!
You should do it with a fixed investment , equal to all . This way the time to pay would be much shorter