1) The accuser (Satan) walked in the land of Uz. Job 1:1,7.
Hell no. Job 1.1–7 talks about Job. Job was in the land of Uz. Then, the book of Job 1.8 explicitly says that "the sons of God came to present themselves before [Yahweh], and [the adversary] also came among them." In this context, the adversary was clearly an angel because he presented himself before Yahweh.
3) The accusing person attended some kind of court sessions in which matters concerning others were presented before a representative of God. Job 1:6. Exodus 18:19.
The accusing person was directly presented before God, not before a representative of God. Therefore, this court was most likely in heaven.
4) What befell Job was done by God himself, rather than the one who brought the accusations against Job. Job 1:11, 21; 2:5; 42:10.
You're misrepresenting the situation. In verse 11 the adversary does say to Yahweh to stretch out his hand. However, if you read on to verse 12, Yahweh then says to the adversary that it is in the power of this very adversary to harm Job. Therefore, it was the adversary who harmed Job.
Because the adversary presented himself directly before God, it was most likely an angel.
You need to do more accurate studies of ancient Judaism. It's clear that you're just some crackpot who has no idea what s/he's talking about.