Mac is right, of course, he always is a very helpful swinger. The more information (in one spot), the easier it is for members to "throw in" their advice for you to dissect and consider.
If you wish to be a "full on cuckold", it is just a matter of explaining your dream in detail, so your wife knows the boundaries of your dream, and knows how committed you are to "not backing out" once the dream starts unfolding in reality.
A wife has to set her marriage vows aside in order to open her thighs for (strange cock), and in order to enjoy the experience, she will develop a certain amount of romantic eroticism with the lucky bull who is "lighting up her fire".
If you talk the panties of your wife, she won't be able to go back to vanilla sex with just one man. A part of her brain is changed forever, and she will need two cocks for the rest of her life - and you must ensure she has plenty of "hobby time" so she can spend a reasonable amount of time with her new sexual partner/s. It is like being married to two men at the same time; she needs her space to cultivate each relationship and attend to each man's unique needs.
If you starting believing your wife is already a cuckoldress living her fantasies, your body language will show her that you are fully committed to her new lifestyle. She will know you will keep your word and your marriage will remain strong as a lion for all time. She can then dance off and find her bulls with a confidence that excites her (and addicts her).
Nothing worse than a cuckold wannabe who does not develop his dream fantasy sufficiently, to allow it to become so strong that it takes over his life completely.
When a cuckold wannabe knows for certain that he is addicted completely to his dream for his wife to become a powerful cuckoldress, guess what, a hypnotic force takes over and it becomes real. His wife's objections dissolve like magic, and she is led by the hand to her first bull. This is basic Quantum Physics 101, it works everytime.
This is why I tell a cuckold wannabe to DO IT, let your dream grow and mature and become real. Your wife must notice a certain look in your eyes that you are already neurologically adjusted and committed; and your marriage is rock solid.
When your wife sees that "look in your eyes", she knows she can sleep with other men to her heart's content, and you will be so pleased for her.