Welcome @Sartaj Ghai,Sounds like you are off to a good start and have the right long term mentality to go far with this!

It's been too much for her mentally and with all the mandating of extra shifts. 

It is zoned multi-family and I could do 14 or 15 straight townhouses but the City in question, while they immediately adopted the latest ADU rules, has archaic multi-family land-use regulations centered on a large apartment complex mentality that are costly for infill / middle housing  (1.75 off-street parking spaces per unit, major landscaping requirements, "amenity" requirements, unreasonably large setbacks, etc.). 

That's probably the best path for mental health and a good life so that should be the goal, not just "financial freedom" IMO.

If youre really worried about the rate differential, just buy it down to match what the rate would be for a primary residence product when you put permanent financing in place and mentally account for it as a Stay Out of Jail fee. 

It is a very protracted and complex case, but I shall summarize best I can:- husband caused the fire and committed suicide- insurance claim denied due to arson- wife filed bad faith claim against insuror under innocent spousal relief argument- insuror still refused to pay claim- wife exhausted all resources; abandoned further claims against insuror- city deemed property uninhabitable and issued demo order (lien)- property demolished along with the solar panels- husband was the sole lessee of record on the solar lease- wife submitted death cert to solar lease co.- bank just recently issued cancellation of debt to wife for 1st mortgage- wife wants to wash hands of it all and sell vacant lot to meMy discussions with the public adjuster I brought on the case was that since the property no longer exists, the solar lien is wiped out, but I'm not sure.    

We don't want to hand it over to the ones we did not like, as it may become more of a headache.If someone could advice what can be done next, would really appreciate it, feels like our options exhausted, but i don't want for the house just hang in there, eating interest.

Whatever they had to do to put all these moving parts together and make them viably work to some degree, tells me about their business mentality and possibilities for future success.

Well, you see, it all goes back to the ancient Greek lunar calendar system.In short, it's "loony".I think they mental shortcut for a "month" being different from a week is easier for regulators to grasp.

If you are simply replacing physical time with mental energy worrying about your syndication investments, I would not say the trade off is worth it.