Not saying it is impossible of course, but thats a lot of guys, and many of them are not going to be interested for pay for play (I am guessing). You will most likely want sps who are good with stags, or dancing as well, and are looking for a group rate that will cover something basic for a period of time. But also, do you expect the activity to be group voyeur? cuz it is one room, 10 guys, that is going to sound like it will be occupied by more than 2 people for much of the time. If it is a suite, then there will be a private room for activities. And be much pricer for that.
So you might expect 50 bucks each for the room; 300-500 each for the sps for say 2-3 hours. This assumes the sps are willing to be paid a flat rate to show up as entertainment, then charge the individuals who wish to spend alone time with them. So each guy will then maybe provide 50 each for her time, and an additional donation for playtime only for those who wish to partake -- privately. She might make more, if there are fs or bj guys, or she may only go home with the original 500. So if there are 3 sps, then each guy will approx provide 200/each for the room and entertainment. Drinks and food extra.
Keeping in mind I have no real idea what you might be able to arrange, but I think that this is not unrealistic.
btw, it does sound like it could be fun. think of it, or present it, like a stag. You might find some sps who advertise they are available for stags, and they would be the ones with the most experience and comfort providing it. And they might have ideas about it. (I would try JessikaXXX -- I think she'd be fun lol)