My main concern that I would have entering this is the possible racism that would arise considering you are adding elements of real religion into this. You, yourself may have an open mind into what these people are like, but others may not and could use this as a slander opportunity.

Only stating this because I know a few people that would love to see certain religions including their people, represented by extremist, burn. You'd want to be VERY careful with how this all goes together and choose the right people.