Cheese and Bites for 50

I'm catering a friend's housewarming (which will consist of around 50 or so walk-in guests throughout the day). One of the items I'm planning to serve is a cheese display with four selections, some rustic bread and fresh fruit/fruit confit to go with it. In addition I'll have 5 other canapes/hors d'oeuvres to pass around.

This leads me to ask, how much cheese is needed to feed those 50 people, given that there are other bites? I'm guessing around 80g of cheese per person is more than adequate. Also, how many bite sized items per person should I prepare?

The catering gig is just a side item, so somebody's going to have to eat all those leftovers. As long as I hit the food cost and everybody leaves happy and stuffed, it should be fine.

And yes, fruit confit = preserved fruit, just cook it down a bit, insert a couple of flavours as a garnish.

The event will take place from around 2 pm to 10 pm (now apparently around 60 people) where people are supposedly walking in during various times of the day. I plan on being there at around 12 to finish prep and do some on site cooking (for fried and baked items and refilling plates).

Since some people may come during dinnertime, my friend hinted at how they might want more food...

Here's my tentative menu:

Cheese display (mentioned above)

Savoury flatbreads with toppings (this is going to be the big stomach stuffer)

Croquettes of bacalao with piri piri and spicy mayonnaise

Duck confit on scallion pancake

Choux puffs with cream filling

Pistachio & Chocolate petit fours

Does the menu look alright? Is it too meat heavy? Also about how many servings of each item should I be expecting to make? They'll all be bite-sized.

I was told that people will come in waves, so I was hoping I could do various things (like fry the salt cod croquettes, reheat the duck, bake the flatbread) relatively a la minute and leaving everything else in the fridge, which will also partially solve the problem of leaving food out at room temperature for too long.