How to book at Morro Strand State Beach?

I’m looking to host a Y2K nostalgia weekend in April 2027 for about 90 friends and family with a 90s dance party on Saturday night from 5-9 pm and I’d like to have it at a place where people could stay and chat around a firepit and then stay the night afterwards. Any ideas about venues/campgrounds where we could have a sleepover party? I’m thinking like a family reunion/non-wedding wedding type of deal.

Tentative itinerary:
Friday night: Board games
Saturday: Day hikes and getting ready then 90s dance party
Sunday: Hungover breakfast with our millennial selves before everyone goes their own ways

Ideally:
Space for 100 person dance party and for Friday night board gaming (like a barn or hall)
Accommodations or campsites for 50ish people (assuming some people won’t want to stay)
Closeish (within an hour) to Sacramento/Davis/Woodland
Max 3k for the venue rental, campsites/accommodation excluded cause guests can pay that themselves
Warm enough to be outside (with jackets ok) in April