I kind of consider it in the same relm of anal sex with lube.

Talk about it, when you think you've talked about it enough talk about it some more.

Professionals are great because it leaves emotions out of it, but also makes repeating it expensive, great for the first time around though.

Also, you'll need to realize that 2 girls and one man is what most guys think of, but your misses might want two guys and her and you might want to discuss this as well.

Always play safe. Better safe then sorry!!!

edited part:

Also, your pick of beauty might be better the professional route, but beauty is all in the eyes of the beholder.