She's sexy to look at, thanks for sharing those photos. Consider yourself lucky to have them as many wives won't pose nude for their husband, or even talk about the stuff we all like. You've told her what you are fantasizing about and hopefully told her in such a way that she understands it is about her as much as you and she can control what happens, with whom, how it will happen. There's one big DON'T for you. Don't make it a campaign and bring it up every time you have sex or talk about sex. Let it ride for a while and make sure she feels your love. Disregard the bullshit you read and see in the porno sites, it's bullshit, designed to sell videos and provide a nice income for the vendors.
If you make it an obsession and turn the screws on her you are assuring your dream will never become a reality.
Some wives never open up to play like we talk about here, but your wife is sexy as hell - enjoy her every chance you get. Have you ever asked her what she fantasize about? When my wife and I were dating, I asked her that (we'd just fucked, had a glass of wine, and were waiting for me to get hard again). What she said blew a discussion I thought I had control of wide open.