One criticism I would make is that he's not clear about the end game. What happens when it comes to be payout time and he only has 75% of the amount he needs to make a payout?

Does he:

1) shut down, and keep the remaining funds for himself?
2) shut down, and make a final 75% payout?
3) skip this payout, wait for new deposits, then continue business as usual whenever there's enough to make a full hourly payout?
4) something else?

It would be good to have that clearly specified.