Wow! That sure sounds like a lot of work. Right now I'm pet sitting for only 2 cats and I just go over there once a day. I feed them and make sure that they have enough water in their drinking fountain, bring in the mail, and check to make sure that their automatic litter box is working properly. I will also need to change the bag in the litter box since their parents are out of town for 2 weeks. I'm getting $15 per day and they live less than 1 mile away from me so it only takes me maybe 15 minutes a day to do this. I would definitely ask for more money per day at least $50 maybe even more. Good luck.