I usually have a load to do every day. It includes my night diaper, which consist of 3 of the night weight gauze diapers, and also usually two or three of my day diapers, which is just one night weight diaper with two small prefold baby diapers for stuffers and two flat gauze for liners to try to keep the big ones a little cleaner.
We bought one of those front load washer and dryers, and it's a lot easier on the fabric, and it will hold six of the heaviest diapers without a problem, and that's including the stuffers and liners.
They don't get completely white because I don't bleach them anymore. I found that the bleach will eat the cloth and leave you with rags. I tried hanging them out on the line, and in the Arizona sun will dry them really well, but they dry to a harder finish, or surface. The dryer will "beat" the material into a nice soft texture. When on the line, I noticed that the inner material has a tendency to clump up in the centers of the diapers, leaving these hard balls of material, and they hurt if you sit on one in the wrong place. The dryer seems to prevent that from happening. So even though the dryer costs me more, I find it's worth it in the long run.
I do use fabric softener in the washer, as well as vinegar, as both help to keep the material nice and soft. And I've not noticed any lack of absorption in the diapers from the softener, like a lot of people say happens.
I hope that helps.