Good idea Cape
Ask open-ended questions, get to know them a bit and LISTEN to them. As you feel them out, start asking or stating things that lead them to say 'yes'. The more times they say yes, and an enthusiastic attitude will get them excited for what you have to offer them, and in this case it is YOU!!
How do you qualify them before you try to sell a certain package? If spouse/cost are the two main objections, start asking things that will make this easier for you to get around. Maybe get an idea of some of their bad habbits (eating out, smoking, alcohol), and around how many times they do it per month. Then if they say $$$ is too much for what you're offering, agree with what they say 'yes, I understand a budget, I'm on one too..., then point out how much they will save on these bad habits once they hire you and start to care about their health. Just be easy going and let them know that you care and are listening to them.
Good luck Buttery!!