It doesn't matter what culture or country you find yourself in--talking about money is never the "right" thing to do. Money is discussed in many ways in different cultures, but we rarely go around talking about how much we make or how much we give.
The most effective way to invite someone to partner with your vision is always going to be through a face to face conversation. Finding the right setting is absolutely crucial to making the other person feel most comfortable and to getting an honest response.