I wouldn't necessarily be uncomfortable with that (I would actually be so proud haha) since coops are community-based complexes so their primarily reason for checking the background and financials is to make sure all their neighbors are in a good standing. 

I am ready to jump in now! 

You may also refinance based on the new appraised value with 90 days seasoning at 75% LTV.

If you can definitively prove that the seller intended to deceive you about the square footage for their personal gain, you may be able to take legal action, but probably low chance of success considering you had ample opportunity to measure the home or get an appraisal with measurements prior to closing, and had your chance to negotiate the price based on square footage and all other factors prior to closing. 

Since the properties are in an IRR, any investments into STR will be based on 1031 exchanges.

I use a filtering system based on the house number and street so every email for a particular transaction skips my inbox and goes in to a specific labeled folder.

I’m really excited to get started but scared to jump in. 

This is a totally reasonable expectation, but before you jump to that conclusion, you should have all the facts.Typically, a market that has been artificially inflated must eventually come back down.

Thank you.Before jumping into any given business, you need to figure out who your target customer is first.

Study different exit strategies, choose one based of off your goals, timeline, and risk tolerance, then find a mentor.