" The models will not get completely naked as this would detract from the casual nature of the game. " - This is your first mistake.
" Chips are for entertainment purposes and can not be exchanged for any redeemable value." - This is you second mistake.
The gambling industry and the web cam adult industry will quickly rip off your idea and they will give people full nudity and also coins with a redeemable value and this will crush your market.
There are already Bitcoin adult sites and some gambling sites with semi-nude and very sexy live dealers. <Example : Bitcasino.io live dealers & Pornhub Casino 2 >