One of the prospective buyers got a pre-purchase inspection (PPI) done. With his permission, I am sharing its results/findings. A lot of questions were about the pulley and harmonic balancer, I also got it checked and inspected. Both reports are provided below:
UPDATE
The weird blower noise is gone! I had initially interpreted and mistaken the compressor's whining as the blower's. I am pretty sure it was the bad compressor because I don't hear it since yesterday. I have made videos of starting cold and after getting the engine warmed up.
Cold...