This brings me to the thorniest bit: If your wife is Mormon, your kids will be expected to be Mormon. Good communication, love, support and understanding are the things you should consider.
You should take your cues from your partner, not from documentaries or this sub, on whether your partner's views and actions are manipulative, brainwashy and damaging.
He also brought up issues with the church when we discussed religion so slowly he brought to light some disturbing facts and even though I would have denied it, it got to me. He is married to his job right now.