E.E.
I think it's very important that you have a differt sort of discussion with your son. He needs to know that you Hear him. Tell him things like I know it's not fair for the adults to be having problems and you to suffer the consequences, you should be allowe to live care free as other 8 year olds but this Is your new reality.
Have one thing just the two of you do, and for each action he picks he also picks the same consequence. Any Time he disrespects you or is hateful, show him the exact same consequence, be firm and loving...good luck!