"Alright, you can pay me in cuddles ;)"

Always Be Closing... just pick the elements of your close.

"You can pay in wine... you a red or white girl?" might do what you want. It builds on the conversation, paints some more picture, it's not particularly risky, and moves towards the Famous Romantic Patio Wine Close.

How many exchanges? As many as it takes, as few as possible. If you take longer than necessary they'll be hooking up with some other dude who knows how to pull the trigger. I was taking to a professional about it (as in, they answer people's tinder messages for money) and they like to get it done in 3 to 6 exchanges. But there are lots of successful reports here that took much longer than that.