Wife’s birthday.

For my wife’s bday in 2 weeks i’m going to lock myself in chastity and give her the key, initially I’m going to ask for 1 full orgasm per week, how ever she sees fit, and when ever she wants. But also the rule will be she needs to cum 3 times per week. She is not very kinky and I’m not sure how it will go over. Any pointers or ideas. Will she like it? How soon till she changes the rules?