The place I recommended has ample dance floor room for 100 or so people. And if any place will accomodate your seating needs, that might be the place. If not, consider renting the YI hall (there are 2 in Blkyn) and getting the caterer thru them.
Word to the wise, though; don’t ask about the seating over the phone, and call it “family” seating when asking. That usually goes over with less angst.