Oh, you're definately not stepping on anyone's toes. Thanks for taking the courage and offering your performance! I'm sure we can work something out. Programming can assign a room (or maybe even the stage if there's still a free slot) and a timeslot, and the necessary technical things, and we can announce this with all the other events in the con book. Event slots are typically 90 minutes.
Now, just do avoid a big disappointment, I'd still like to dampen your expectations a bit, though. I can understand that you'd fancy a large audience - but in that regard, you are on your own. You're competing against two established acts who set the bar pretty high. As a newcomer, you'll probably have to see how many people show up for your initial show, and it might be a relatively small crowd at first. If your routine is well received, do this more than once at different cons and venues, and earn yourself a name - and if the audience thinks you're really good, they will return and bring their friends the next time. So please do not expect to get a prime time slot on the main stage for your very first performance at EF.
I know this sounds discouraging, but please don't let that stop you. I just want to make sure you have realistic expectations