OR hang tight for many years, raise rents when or if I can and use my other rental property cashflow to weather CapEx expenses. 

By that time, cash is the king and credit will be tight. 

If you go with an open mind (but tightly closed wallet) you most likely will pick up ideas for further study.The other benefit I've found is that you walk away energized and excited to contine the journey.

We had put loan and appraisal contingencies in the offer (no inspection contingency) and have 5 days before the contingency deadline expires.

I've read through the contract particulars more tightly since my post - and found another area that addresses it immediately: "In the event Buyer and/or Seller choose not to purchase a HWPP prior to recording, this paragraph shall serve as acknowledgement Buyer and/or Seller wish to waive their right to purchase the plan."

The more perspectives on the same problem, the merrier.My wife and I do self-managed low-income landlording in SFR and duplexes in an urban area with tight streets.

if this is a house hack, then it could work out  simply because you will be there to monitor - but very tight.

50 percent of being a successful landlord is having an air tight lease.

There is a deadline.

But if you have a deadline, multiple jobs, or just short of time... you gotta pay to play.