I hate Ti Couz…but maybe that’s just because I had one really bad experience there with terrible service (It took them over an hour to bring us our food after we ordered).
I think the best place for a cheap huge meal is House of Nan King. If you call ahead you can reserve enough tables for 30 people. Amazing chinese food, they serve it family style, and you can arrange it with them in advance so it’s about $15 per person. VERY good deal.