Emersed Crypt Tank (Mother's Day Gift)

OK, I've been keeping Crypts in my tank for some time now and every time my mother visits she exclaims about how beautiful they are. She keeps orchids in her conservatory and I think I've got her convinced to give emersed-growth Crypts a shot, in fact I'm going to send her some shoots for Mother's Day. I would love her to see those incredible inflorescences. I have a multitude of species to get her started and I want to get her going with a good emersed-growth tank the right way.

First: What sort of substrate would be best? I suggested a base of peat with standard potting soil on top.

Second: What sort of water levels in the terrarium/paludarium would be best for Crypts. Should they be misted daily, etc.?

Third: What is the best way to encourage spathe formation in Crypts in an emersed environment?

Fourth: My mother's thumb is green down to the bottom knuckle but she knows nothing of aquatic plants. Any tips I should pass along?

Thanks again for the great forum guys