They say that after a year it is perfectly fine to give your daughter cows milk. I have a 12 month old and we started her on cows milk the day after she turned one. We made the personal decision to go half cows milk and half toddlers formula but that was just a personal thing. As long as your little one hasn't shown any kind of reactions to yoghurt, cheese etc she should be fine with the milk so my health nurse tells me. She also said that there is no need to water it down.
As far as the big bed goes I won't be moving my Kaitlyn into one anytime soon. My opinion would be that when your little one has figured out how to climb out of the cot, or is just too big to sleep comfortably in it, it would definitely be time to change but for now isn't it nicer to know that they can't just get out and go wondering without you knowing.
I hope this helps you out somewhat. Have a great day.
Karen, NSW, 1 baby girl