Cash Gift from relatives and related tax/IRS issues.

My mother who is living abroad is trying to help me fund education. 

"Jim" is a friend of her brother. She sent $30,000 worth of foreigh currency to Jim's overseas account. Jim was supposed to give me $30,000 here in the US.

Jim, however, pays me $30,000 in cash (bank notes) and the money is accepted by his friend, namely my mother's brother.

I understand that there is no tax obligation on my part because ultimitely this is a gift and not income. I also understand that my bank will fill 8300 when I deposite the $30,000 bank notes. Question is, do I need to (or should I) file 8300 as well, saying that I received $30,000 cash? If so who is the donor in this case? Is it the person from whom I phisically collect the money? Does my mother's brother need to file 709 Gift Form, and another 8300 stating that he received $30,000 from Jim? The goal for me/us is to avoid any unneccessary complication dealing with IRS or Law Enforcement.

 

Can I alternatively only file 3520 foreign gift form, as the origin of the gift is from abroad?