This project features 1 of the 3 buildings with one being ONLY for AirBnb purposes.

Unfortunately, building houses is very cash intensive.  

You just need to be efficient with your time and build a system so you are submitting enough offers to get through all the rejections and eventually someone will take your offer.

I do understand your given scenario as I have been in contract with 2 properties in Daytona beach, FL in which I ended up pulling out after inspections but insurance was an added factor as well. 

I think most would disagree with the 15 year strategy but if you can afford it, its not a bad plan to build up some equity.

Would convert to flex building.

Then he proceeded to walk through the home and point out reasons why he would not pass my plumbing inspection, nothing to do with plumbing btw.I've jumped through his hoops fixed what he's pointed out and got the electrical permit pulled and got a passing electrical inspection.

This strategy can help offset your housing costs while you build equity in the property.

Tenant doesn't move anyone else in.90 day inspection ( watch for cleanliness).Pot smoking is very common. 

Sell your current home and build on the land?