Conservatives and Christians tend to be good people, but we also need to balance that with situational awareness. When you are being assaulted, raped, enslaved, or otherwise attacked, you have a moral right and in fact a duty to (1) defend yourself, and (2) be as deceptive as necessary to improve your position.
Once someone “asks” you to actively participate in a gay parody of marriage, you are being threatened with enslavement. You will be compelled to obey against your will, against your First Amendment constitutional rights to the free exercise of religion and to freedom of association, and against your Eighth Amendment protection against excessive fines. At that point, you have not just the right but the duty to deceive or even directly lie rather than suffer persecution.
“Sure, I would be happy to do your flowers. I imagine that will run $180 . . . per guest. How many people are you inviting?”
“Of course, my fee for planning your arrangements would be $2300, nonrefundable, as a deposit before I provide my estimate for the full wedding. Will that be cash or check?”
Never, ever decline or explain your unusual or disproportionate fee structure. It is what it is, and that is simply your compensation for the amount of time you think their request would take you. In the context of your work, you have no objection to their perversion, at least none you share with anyone. Ever. You are happy to recommend a florist who might have a fee structure they would prefer, but what they have described is not a close match to your strengths, so you might not be as efficient as others. But you hope they will call back after price shopping.
If I was a florist, baker or photographer, I wouldn’t provide any services to weddings, or anything romantic at all for that matter. That way I would avoid any potential situation like this. In the wake of this decision, that’s what Stutzman should do. Or better yet, move out of the state of Washington!