We have about 300 guests and intend to have cupcakes, brownies and ice cream at the reception. Wondering how much cupcakes and brownies should we get. They are the mini sized ones. Thinking of about 150 pcs each of cupcakes and brownies with 6 tubs of ice cream (1 tub = 50 scoops). Is this too much or too little? Can someone please advise. Thanks!