You don't want to be a crazy cat lady? I can't immagine the amount of time spent cleaning litter boxes that would be involved in that many cats... The two I'm taking care of at the moment are enough from that stantpoint. They do look like nice, poofy cats though!
We installed a cat door so 5 out of 6 cats choose to go outside to use the bathroom. Only our 17 year old cat chooses to use the litter box. That's why even though we have 6 it's really no more work than having only a few. Now that we live in the country I let them come and go as they please. I leave unlimited access to dry food in the kitchen. The cats really take care of themselves.