So neither you or the seller is required to perform your addendum, but assuming you don’t sign this addendum you aren’t required to submit to it either. 

You'll also get credit for the security deposits.As for the Housing Authority, I submit the paperwork ASAP following the sale & request that all payments to the previous owner be stopped (here, by email) and follow up daily until I have been given confirmation that it's been processed.If the payments do go to the previous landlord after the sale, immediately notify the HA.

Everything else has been submitted as actual receipts from home depot.

I let them know that I don't have much time today, but please submit any maintenance request to X and we'll take a look at it very soon.4.

I’d recommend the MLS option because it will let you know what people are buying at retail, and it will have the pictures submitted with the listing.

They make you deposit $5k for every property you wish to place a bid on and then you submit a proxy bid which has to be your highest and best. 

I don't think there is ever anything wrong with submitting a low offer.

If we have all of our required documents in place do you recommend running an email campaign, submitting a project through crowdfunding site like fundrise.com, or starting with accredited investors that each member knows personally?

If he hem/haws when you ask if he has it in contract, but won't tell you what the amount is, call the seller directly - You can always submit a back-up offer if the WS wants to play the a-hole.

In this case, who is liable for the damage and who should be the one submitting a claim, if any?