If your property qualifies for a higher amount, the housing authority will let you know what they can approve.

We find it highly unlikely that the Legislature, having demonstrated its strong commitment to the protection of tenants from unjustifiable evictions, would have intended to permit the eviction of an exemplary tenant solely for the reason that the federal government has found her qualified to participate in the Section 8 housing program pursuant to which the government pays a portion of her rent. ”)

My only idea so far is to cash out the contributions we've made to our Roth IRAs, and pull the amount of qualified medical expenses from our HSAs (total ~$80k).

Question is, how is he able to qualify for a mortgage if he makes no income?!? 

How much equity do you currently have in the property, and do you expect it to appreciate enough in the next six months to qualify for a HELOC?

However, the use of the property as a personal residence by Person A might qualify Person C for a partial exclusion of capital gains if Person A met the 2-out-of-5-year ownership and use test before their death.

Which you either assume (which is unlikely to happen in  a formal sense, so by 'assume' I mean start payments), or you do a loan with the seller for $80k. 

If you consider yourself a "qualified individual" to make such estimates - maybe.

SBA - if your property is a business, you may qualify for low interest loans.

This is assuming the rental has been on the market for a while, is priced competitively, and the asset is in good condition.If you aren't getting enough qualified applicants, you can adjust 2 different things; the qualifications or the rental amount.