You forgot one thing though, is it provably fair? If not you'll have a hard time finding people willing to gamble with their hard earned money on a site where you could literally set the code for you to win all the time or win on any bet over a certain threshold.
Yeah provably fair would be nice, but it's not a deal breaker for most people.
Most of those commercial slot games can't even be provably fair.
OP, even though you're a newbie account, your site looks very good and I'm glad you've implemented anonymous accounts.
I wish you good luck with your casino8
Provably fair is a very special feature that is now required on dice game but that's all.
For the rest we got no indication on the house edge. Slots just eat your money anyway xD