I don't know of any reputable turnkey providers outside of Chicago that focus on multifamily. 

Over time, you may develop a reputation that others can trust.

Do a couple of deals with normal timing, pay the lender back, then share the bank owned scenario with them, they might want to partner with you.And in the 17 years of doing business, I have never had a private lender ask for a credit report, an appraisal or an inspection, they did, however, want to see before and after photos and profit and loss sheets of deals I have done (a few of them anyway) Once you build up a reputation of doing deals and using private money, you can get funding fairly easily for regular closings and build a track record with those lenders and they might fund instantly at the courthouse steps

Also there are reputable firms like Marcus and Millichap that have brokers in each market.

Not a good reputation in this industry.

The glass top / cooktop part is no longer manufactured.

If you are over $1mm, then I would call a few reputable commercial mortgage brokers. 

Or what if global warming/wildfires are worse than predicted, or a major employer leaves the area(think Kodak/Rochester, car manufacturers/Detroit, etc.)

This is NOT the case with a modular or manufactured home that has been moved from one location to another. 

Since getting here we remodeled a manufactured home in La Pine, OR, and sold it right away.