1. My first purchase, the district gave me a temp tag. Second go-round, they let me leave their plates on, and mail them back.
It's a school bus, no one is paying any attention to you! Heard many stories of driving hundreds of miles with NO PLATES.
2. Paint depends on where you title it. CO allows it to remain NSBY, but have to cover or remove 'School'.
3. Proof of some type of insurance, usually your existing policy is good enough.
If you are looking for insurance, try National General through Good Sam.
If you are not familiar with air brakes, GET FAMILIAR with them, and how they work. YouTube has several driver training videos.
Take 10min. to ensure the safety of those you are sharing the road with!
Congratulations and good luck!