Self Catering Wedding? I

Any of you guys done it? Me and my partner are both Industry, can prep and store in my workplace, venue has a decent enough little kitchen for reheating and a chef buddy of mine has said he’d do the buffet service on the day. It’s only 60 people, and we’re pretty tight on funds, also, I don’t want shitty overpriced wedding catering.

EDIT: I would not be doing any cooking on the day, everything would be cooked in advance and ready for reheating & serving on the day. The chef would be collecting, reheating and serving the food, maybe deep frying some prepped items on the day.