I did check airdna, mashvisor, str mgt company estimates, etc, prior to going str and I think I was pretty realistic.

For example, divorce buyout calculators can help you estimate how to fairly split equity.

What is the estimated cost of repairs? 

Make sure you give them a review on the platforms and if you want, you can report them to whatever accreditation board they have, but that may not result in anything.And get a second, independent estimate on repairs. 

My estimate is, even with my underwriting, cash flow in excess of $2k.

I have not as of yet retrieved estimates for rehab of both houses. 

You can listen to the 1,000+ episodes of the podcast, read the 10,000 blog articles, any of the 40 books, and otherwise immerse yourself to your heart's content until you feel ready.You can browse markets, look at deals, learn to manage properties, practice analyzing deals or estimating rent, and meet with Agents, Lenders, Property Managers, Tax Pros, and Syndicators offering Passive Investments. 

Wondering if you have any rough estimates of to how much a fideicomiso cost...

I had just said that we expected it to be about $110,000 and they were like “No we need a formal estimate”.

They are going to write up a field estimate and are willing to (usually) pay you (the homeowner) or your preferred Contractor that money for the repair.