No, it is not treated with neonicotinoid pesticides.
The plant is shipped in a #1 pot with a minimum height of 12 in.
Deer will not eat it. As to trampling it.....protect when small.
No, this tree is rated for planting in zones 6-9.
As soon as you can in the spring. Don't wait for the heat. I live in Texas. Water well for the 1st year.
Yes. You will want to make sure the container you transfer it to is twice the size of the root ball and well-draining.