Why not make your own dice site hire a person to do a site for you i think its better a choice if you have a decent amount of bitcoin rather than ivesting into other dice site.
Making a dice site is not as easy as you think. The user would need to create a custom back and front end with great features to attract users. It isn't easy to manage the advertising and the support of the dice site either. As a start, you need to have at least 1000 BTC for people to be interested to try out your dice site. You're responsible to take care of the security management too.
of course i know that its hard. Just like what i've said IF you have a decent amount you can pay others convert your some btc to pay them. For ME thats the best thing to do.