And I am fine with both long term and short term rentals.

They are putting around 25% -30% down and as long as you purchase in an area with a reputation for high occupancy and above average ADR's, along with choosing a management team that will market your home tirelessly, you can come out just fine. 

YUp you can make a loan on a home the borrower is living in as long as the proceeds are for a business purpose.. but it is a fine line.. 

Generally speaking, I know there are a lot of fine details and higher interest rate you make while you wait for it to be sold at auction etc. 

Yes, if you have a large line of credit with another lender on another property that would be the same as having large reserves and would work just fine. 

Generally if you are looking at a rate-term refinance (i.e. less than $2000 cash-out or just refinancing into a long-term lower-rate loan but same loan amount) then you should be fine - if looking to cash-out on the refi - generally will need to wait six months of seasoning however there are a few lenders that will do cash-outs at the 3 month seasoning mark

Hopefully you did not pay too much for the dirt. 1 acre is optimal these days because of desired double to triple drive thru for QSR.It can become a problem because if they make the building smaller you get less rent but they do more sales.Example a QSR used to be 3,000 to 4,000 sq ft but now instead wants double drive thru's as not many go inside for fast food like pre-covid.If you get 1,000 a foot less at 30 a foot you just lost 30k NOI and now at 5 cap example paying all cash NNN once developed you have lost 600k value.It can fine as long as you do not overpay for the land.

The company who actually fixed the HVAC charged $268 but the "Preferred Vendor" middleman modified that invoice to include 6lbs of freon (not on the HVAC sub's invoice) and charged me $700.Latchel probably works fine if you force them to only use your vetted contractors, but I have zero respect for Latchel's "Preferred Vendors".

Position your property in both quality and price to your market and you will do just fine :)

That's fine for ADA as long as you have the clearances under the sinks and that is cheap to fix if not!