HELP!! I Need Short Sale Advice Here

I am a day away from submitting an offer to a lender for my first short sale, heres the deal: House principal balance- $122,000 House in arrears(w fees)-$21,000 Total-$144,000 FHA loan with Countrywide I have the homeowners full cooperation Comps are around- $180,000-190,000 in area My offer to the homeowner was around 123,000 they accepted. No BPO yet and i havent submitted my offer. My question is because its an FHA loan, how should i present the offer to the lender? What do the banks look for? What are their requirements to short sale a FHA loan? I am preparing a hardship letter from the homeowners to the lender. What should the letter say? I have estimates for work to be done to the property for $40,000 Lengthy building inspection report by a town inspector which has a ton of stuff to bring the property up to code before sale can close. I am getting Low comps for area hoping for around $160,000 Pictures which make the property look bad. The homeonwer wants $5000 for uhaul money and they have no money to pay the closing costs. Can I roll those amounts into the loan or does that have to come out of my pocket? Is there anything I should know about woking a FHA deal like this? Am I missing something guys..... this is my first deal I can leave no stone unturned. I appreciate all your info Thanks Bill