I think the issue that you're going to run into with most agencies and bachelor parties is with screening. While I wouldn't do bachelor parties myself (since I don't see more than one client per day), I do have a girl or two who would be willing to. However I'd need screening information for every guy who's going to be there, and then the girl would need to verify that everyone who was there has been screened. So realistically, it's probably not going to happen.

Now obviously I can't speak for Tempu, or any other agency, but that's how I've handled such requests in the past. But I suspect that you'll run into similar issues with any reputable agency. You're probably going to be better off going with one of the stripper agencies, and just hope that the dancer(s) who show up offer whatever 'extras' you're looking for.