Laid Off! Worried... and other questions... Please help.

[Sapphirewng 7]

My fiance just recieved his packet from the U.S. embassy in Bucharest, Romania. He has been telling me the things he needs me to mail to him. First of all, I have recently been laid off from my job due to lack of work. He says I have to mail a letter from my employer stating when I was hired and what my salary is. Will I still be able to get that letter even though I'm laid off now? My income will not be enough now, so I will have to get my stepfather to co-sponsor. My stepfather and my mother have a joint bank account. Will they both need to fill out the I-134, or just my stepfather? My mother does not work, only my stepfather. Also, I have applied for unemployment. Will I need a letter or something from them showing how much I will be getting from unemployment benefits? Also, I get a check from Social Security once a month for my 16 year old son. (His father passed away in 2009.) I assume I will need to get a letter from Social Security stating how much I recieve from them as well? I'm very nervous about all this. I'm so afraid he will be denied now because of my lay off. My fiance called the embassy today and spoke with a consulate. She told him it will be fine if he has a co-sponsor. But I'm still worried. In the packet he recieved, it said that it was optional for the co-sponsor to write a notarized statement declaring their willingness and ability to support my fiance, and also their motive for doing so. Does anyone feel that it would be a good idea for my stepfather to do that? I feel that it might be beneficial. Any advice on all this would be appreciated. Thank you!