This was especially wild, considering the defects we found presumably should not have passed a city permit inspection; however they had. 

Would you pay $3m for a property today, with horrible numbers, if "Johnny-Time-Traveler" stopped by and showed you inflation would run wild and dollar basically halve in next years, effecting a "inflation 2x" to asset prices? 

Assuming the neighborhood doesn't change substantially and still warrants a 15.6 GRM on its buildings, you should be able to sell the property for $2.5M ($13,4000/month x 12 months x 15.6 GRM).So if you bought at $1.5M, spend $900K on the renovation and ADU build, then sell for $2.5M, you haven't really earned that much for your efforts.So, yeah, these improvements don't seem worthwhile at the prices you've been quoted, but again, your quotes seem wildly high.

I know Florida property insurance is wild right, but has anyone found more success with particular insurers over others?

In for a wild ride.

Def is a competition between investors looking for deals and families that have the money/time to do minor live in renovations, I see it everyday- people offering 15+ over asking and then some because the market is so wild. 

My long term goal is to buy within the next month, then within six months be ready to purchase our first BRRR or flip; likely out of state because Washington is a little wild with the real estate.

We see these disruptions in inflation manifested all around us, but the sectors that the government has gone "whole hog" in, inflation has been particularly wild:  Healthcare, college/higher education, and real estate. 

Lots of opportunities but the Wild West.  

. - I learned, through the course of these discussions that these funds are wildly different. - I created a picture of a fictional "perfect" fund that met all of my criteria. - Because nothing really came that close, I ended up just buying notes directly.