Make ahead frozen meals.

gottagetitoff11

I was going to start making meals weekly and freezing them.
I was wondering a few things:

1. Is it ok to cook frozen veggies then refreeze in dished.
2. What are the best dishes to use.
3. Does the containers have to be full to kerp air out.
4. Is it ok to take them out the night before to defrost a bit before put in the microwave.

Thanks