You need shitload of money probably to do that , people are not going to start depositing money into your casino unless they know you have the funds but since you considered making a faucet , I don't think you have enough money to make a casino .
Casino need to be well programmed as-well and made by trusted people otherwise developer may leave a backdoor in your website , get paid then comeback later to steal your bitcoins , It's really not that easy . (don't even think on using Open-Source casinos)