Maybe negatively affecting the property value because of the type of loan it now would qualify for?

To repeat- they're only capable of catching defects that are observable without overcoming significant obstacles. 

For example, if your plan is to live in the property for a year and then move to a new FHA-financed multi-family and repeat the process, then you'd assume income from the 2 tenant-occupied units for year 1, and from all 3 tenant-occupied units for years 2 onward. 

So how will that affect rental demand?

Finding buyers is easy, simply look up all cash closed transactions over the past 12 months and find entity names that repeat multiple times.

Mid term goal: nail down systems and procedures on the first and learn everything I can, refi and repeat after about a year from purchase.

Empty the boxes in their new apartment, rinse and repeat until finished. 

As a bonus you can buy the bundle deal with the BRRRR (Buy Rehab Rent Refinance Repeat) Book4) Flipping and Estimating Bundle5) Real Estate Note Investing - Don't let the name of the book confuse you.

There are numerous factors that will affect your ability to finance real estate in the US, such as the restrictions of your home country, immigration status, your personal financial history, etc. 

You can do an llc if you want but that doesn't affect how you should handle the profit/loss.