First of all, I recommend to not create faucet rotator. Mostly faucets require to view shortlinks and it doesn't work on rotator. And many faucets can't be opened on iframe.
Currently I have faucet list/crypto blog on Wordpress. ~ year ago I was able to earn few hundred bucks per month with 200-300 visitors per day. Now traffic slightly decreased, I earn maybe up to $50 per monthy. Other factors why earnings decreased - there aren't many decent faucets left and also not many newbies are interested in faucets - they focus on airdrops and bounties.
I update my list one - two times a week. Now when there aren't many faucets I don't have spend lot of time while updating list.
About ad networks. I was also accepted by Bitcoadz.io. I didn't tried more ad networks because I don't want that my site would be full of ads. But I'm sure that some more ad networks can accept such websites, you only have to meet their requirements.