This is not about setting them up or about manipulation. It is about co-creating an idea. People are less likely to reject something they have been a party to creating. Move rocks, not mountains. Suggest ways to get started.
Small steps require less trust in the unknown and less risk for the listener.
If this works, then we ll move onto that. Suggest a test period or trial of some sort. Ask for feedback along the way. It is a common trap to fear feedback and not ask for it until the end. The problem with this is that when you get to the end, you have nothing else to present or can begin to sound defensive.