Don't be complacent. Don't run an online casino without permits, even you are running on cryptocurrencies. Seek advice from local personalities available that are knowledgeable of the risks and pre-requisites of running one in your local state. Also, don't rush things, and make testings to make sure your casino won't be abused and bankrupted by some strategies.
You hit the point.
Most upcoming casino are always good in rushing things. Some don't even wait to test things within their website before giving it out to users. At the end, the site becomes easy to hackers. OP, try not to use already made script but one that has is built from a scratch.