HELP how many quantity-desperate cook

[Rakhi]

Hello I need some help.I have a party tomorrow and I need to know the certain quantities.
there are 14 adults,6children ages3-7

I am making chappathi and rice(sona masoori)
approx. how many cups of unccoked rice I need to prepeare?
is 3/4 cup for one person too much or too little.
cup is the std measuring cup we get in walmart .
and what abt quantities of curries.
I am making aviyal,daal,a veg fry and moru kuzhambu and also a stew for chappathi.pls someone who has experience advice me on this.how many quarts I need to prepare each curry ?will 2 quarts of each be enough.there are 5 curries for rice along with pappad,pickle etc.
dessert is payasam.I thought of making 4 quarts.

pls reply ASAP.
desperate cook

[pavalamani pragasam]

3/4 cup rice per head is appropriate. 2 kids can be counted as one adult. 11/2 quarts of curry must suffice. Lessen the quantity of dessert also.