It seems obvious to those who working mortgage lending and financial services, but for those with no experience, they may as well be in the shark tank. 

If you are going to get someone out there with a backhoe , you may as well do it right and replace the entire line .

A large part of the loan proceeds were almost immediately distributed to “personal accounts and payoffs†for Tim Blixseth, who founded Yellowstone and controlled it, and his former wife, Edra.“The only plausible explanation for Credit Suisse’s actions is that it was simply driven by the fees it was extracting from the loans it was selling, and letting the chips fall where they may,†the judge wrote.“Unfortunately for Credit Suisse,†he added, “those chips fell in this court.â€A Credit Suisse spokesman told Reuters that the company was disappointed with the ruling, disagreed with the court’s findings and was considering its options.

So, they may as well lower the price or repair the issue.

The only change I would see is use YOUR buyer's agent, someone that represents you, because the money is already being paid out by HUD, so they may as well be paying someone you know, trust, and represents you.

If you are doing the work - you may as well be rewarded for it.

Is it significantly off to the point I may as well not use it, or is it within a good margin of error for some estimates?

As bad as Zillow is for finding comps, you may as well see what you can do on your own. 

You may, as policy, not assess a late fee until the 5th, but I would consider serving a Notice to Vacate the day rent become late (2nd) giving the tenant 7-days to pay or 15 to move {or whatever terms are specified in your legislation}.

I hope you all were successful in obtaining your goals in May!As