@brorie12 as a party planner I would say then you are looking at 25-35 attendees most likely. But it really depends on RSVPs. Like I follow up with those who don't respond so we have a definitive answer yes, no, maybe. For count.
I wouldn't worry too much. We invited 75, many out of town family that just sent a gift or money instead, and had around 50 rsvp they were coming, and about 35 actually attend. :)