My issue is that the listing agent assured us that he had an approval letter that we met all of the conditions of, and that it would apply to our offer.

The outside coil looks new so that's an unknown. 

Just curious if any one has put metal roofing, led lighting, & any other green into SF or MF rentals?

There are alternate options to transfer air to/from bedrooms, but those get somewhat complicated.The cassette fan coils are ugly and take up wall space, You also need a thermostat for each one so you have to plan for labor for that wiring.In my experience the Japanese products (mitsubishi, fujitsu, daikin, etc.) are better technology than the American manufacturers (trane, lenox, etc.).

There is no best one saving/investing vehicle so do a few, consider cash, metals, passive index funds, stocks... 

Precious metals to protect wealth. 401k only with a company match to buy more real estate cashflow and more precious metals.

For those that don't know me, here is a disclaimer:  The following is a real question, not a passive-agressive semi- sarcastic one:  Why would you have taken a 6 year loan on a (probably) $40k+ car which is nothing more than depreciating hunk of metal aka 'asset'? 

Want to go back to the gold, or even bi-metal standard(s)?

They make anything and everything out of metal. 

There are differing opinions on the the ability to amend your LLC Agreement to include the purpose statement with a retroactive effective date, but it certainly gets more difficult to justify if significant time has passed.Assuming you actually have gains within 180 days prior to the date you invested your money in the LLC, and assuming your LLC met all of the requirements for the properties to qualify (purchased from unrelated party, meet the 50% "substantial improvement" test, etc.), there are some that could tell you that qualifying your existing LLC could be an outside possibility depending on your tax risk appetite, but I likely wouldn't recommend especially if you have already filed 2018 tax returns.