May I just suggest that you seek a MINIMUM of 2 sps, preferably two that know each other and would be willing to attend together. That will double your budget, and I think you can understand why it would be inappropriate for you to think that one sp outnumbered by so many guys, gentlemen or not, for any event would put her at risk. At the very least, you should expect on site in the room security, and you may prefer the option of the 2nd sp over driver Dave in the corner lol.
For three hours, outside of any other expectations, you should offer 500-600, bottom line. If you are not, you should expect her to charge that.
If you simply want topless dealers/bartender, there have in the past been adult entertainment services that would set you up with that. There would be no side jobs (i.e. hjs and bjs) of course. The rate would no doubt be significantly lower.
At this point, I would suggest that you do the work, rather than expect sps to contact you. For one thing, sps screen the clients who are coming to see them themselves, they see them one on one and both have a vested interested in discretion and mutual respect of privacy. There is no such implied contract in this scenario. We have some guys who will be meeting the sps, what they look like, working name etc, with no vested interest in keeping silent about it all, if you know what I mean.
Are you prepared to provide all enough info about all of the attendees to the sps who express interest, knowing that afterwards she may decline? Will you allow her to contact them individually if that is how she screens?
Not sure what is in the air today, but this is the 3rd thread I have seen on different boards with this similar theme. Up to and including the reference to the side deals. This is poker, the other a stag. Not sure what to think about that kind of coincidence.