Overnighters are a complete waste of money in my opinion. Before I even get onto the girl, the last thing I want is to be up all night anyway if I don't have to be. And if I'm going to sleep I much prefer a nice bed to myself than with some prossie who I barely know.
Most prossies, going on the reviews and comments of others, do not expect to be up all night fucking on an overnight. Once or twice in the evening and, if you're lucky, once in the morning. The rest is eating (at your expense), chatting (fine, on their time, but to pay a prossie for conversation?
) and sleeping (see "chatting").
I'd pay for two separate prossies for thirty minutes (max an hour) in the evening, sleep solo all night, then pay another one in the morning. I wouldn't feed any of them, I wouldn't pay to chat with any of them and I certainly wouldn't pay any of them to sleep