The paying out and the instant payment you mentioned are the major problems casinos are facing in the system. I can see that you promised a lot to your customers and if they are not advertisement techniques to lure your clients to use the site, I will also like to visit the site to see how good and true your instant payout is working even with big wagering. Many casinos would promise heaven and earth but in the end, their promises could not be realized. If you want to be a distinct casino then you have to stick to your promise.
One thing to confirm this is by reading feedback to reputable members in the forum though that kind of features really is a good for a gambling site and many gambling sites really failed in doing it. Well a promised and advertisement is different, I just hope that what you advertised is true because that will the customers will remember in your gambling site.