Tango and swinging sex

I am the male half of a swinging couple. I also love to dance Argentine tango it is sooooo sexy and there is a real connection there. I would like to improve my tango dancing and I feel it would be nice to combine it with a intimate passionate sexual relationship I.e. A lesson followed by sex. Problem my wife cannot dance, and I don't feel comfortable swinging without my wife present even if my wife has no problem( she has told me she has no problem with it and she said she would get off on the thought of it). Option one: forget about the sex, A very good option as fantasies are fine kept that way. Option two: find a partner for sex without my wife, don't like this not really an option Option three: find a couple like us with a female partner for a foursome after the lesson/ performance, the male partner and my wife can watch the lesson or get warmed up while we dance, another good option but almost impossible to find such a pair. Option four: find a bisexual female for a threesome after also a good option, but perhaps not enough cocks and also hard to find. Any other options? Suggestions? Offers?