I will defrost 1-2 days worth of meat at a time and keep it in an airtight container in the fridge. I feed twice a day, both portions on the small side. When it comes time to defrost more food I use a new container. I let them clean their bowls really well and then give them a wash at least once a week.
You can switch your dog to raw right away with little to no effect (i have never seen any). Just be sure not to feed too much or they get backed up (raw food barf is pretty gross).
I still let my dogs kiss me, but not right after a meal. And keep in mind too that their poops could contain salmonella and stuff. I think if you follow proper meat handling precautions then you will be fine
-Diana