DH's bday party menu

Ok this this is what i have on the menu...tell me if you think its enough for about 20+ people! (how im going to fit 20+ people in our itty bitty apt i have no idea) oh yeah but its suppose to snow sooooo prob will be way too much food cuz nobody will show up!! IT ALWAYS SNOWS WHEN I TRY AND PLAN SOMETHING THAT REQUIRES PEOPLE TO TRAVEL!!! UGH!!

anywhoo!

ok i ordered:
6ft hero half italian half american
with potato salad, macaroni salad, and coleslaw
(i was just going to to appetizers at first but i wasnt sure if i would have time to do everything!!
making:
Mini Sliders
(my first atempt at this i got that infomercial slider maker for my shower and never used it)
cheddar cheese sausage balls
made them before i know they are yum!
Taco Cups
its basically taco dip already in tostedos scoops, like individually already dipped..with refried beans, taco meat salsa sour cream, topped with an sliced olive.
Cheddar cheese pepperoni puffs
never made these before either so im nervous they wont come out right!
then i have, chips gallore, onion dip, salsa...etc
my mom is making:
a veggie and dip platter and buffalo chicken dip
my SIL is bringing
spinach dip in a bread bowl

then im baking:
chocolate cake, red velvet cup cakes, chocolate chip cookies and brownies

i have such anxiety about this and DH pretty much knows about it already! I dont wanna ask him to help because he is a chef and whatever will take over and i want people to know that i can cook and host a fab party by myself!!!!!!!!! i just wanna look like a good housewife and im nervous im not going to get it all done!!!

and how much beer should i get! im use to just have chris friends come over who bring their own all the time?? 3- 18 packs good?