Wow! Getting paid to teach a fairytale. Personally, I don't think I could pull it off. Be careful of the so-called "friends." If anyone of them consider you to be hypocritical, religious delusion will be the stronger "moral" to exploit you. What a conundrum. I wish it could be me!
I am retired and have often thought of working at McDonalds just to serve hamburgers without the meat, or to serve fries without the carton... just for the fun of it. I hope you can somehow have fun with what you for a living without being malicious, though.
What happens if one of your students grows up to become an Atheist and they later find out that you were one... and you taught them something you didn't believe. That is like being deliberately deluded. Oh oh... sorry. I was just thinking, really. I mean, I could delete the sentence, but I'm thinking... how would I handle that?
I think I would just have to say that I was being paid to teach religion and not Atheism. So, as in your case, you have to teach what you are being paid to teach. That doesn't mean you have to believe it, too! Just be careful about telling anyone! "Friends" are not always friends like you might believe they are.
Yeah... that's it. Works for me! I hope that it is good advise for you, too.
Good luck! Have fun! :)