Overwhelmed by cats.

I currently have 3 cats and 4 kittens. They are all awesome, I am working on getting all the kittens fixed, apparently that helps get them homes. I need to start stockpiling litter and food though, so many cats. I'd like to add I have the adult cats fixed. The kittens were the result of a stray cat, I had planned on catching her and fixing her, but was never able to get her in time. She dropped them all on the porch when it was nearly 100 degrees outside and we brought them in for her. She is now fixed and back outside. Now we need to get the kittens fixed and put some of them outside, but preferably find them homes.