Lack of water, heat, or sewer are instant fails.

The surrounding areas I mentioned have multifamily properties and single family homes that are great candidates for ADUs (accessory dwelling units).

This allows the REI to exponentially grow as opposed to  the limited linear growth that current strategies allow for.This also allows for paying higher interest (using special rules) and even more than the Asking Price for a property and make instantly more money, more cash, and more future gains (appreciation and equity) then using the current buy low and sell high system. 

The one other thing that comes to my mind is adding an ADU (attached dwelling unit) -  do you have the space to create an additional 400-1000sqft unit on your property? 

Mobile home parks provide the only affordable form of detached dwelling in the U.S.

This is a great way to insert yourself into a deal, using something like an FHA loan, and drop your housing costs to zero, or preferably have your primary dwelling pay you.There are lenders out there writing conventional loans with 5% down, so the FHA is not the only way to get a low down payment.

I’ve been dwelling over this for about a month and a half.

If I were that agent's broker, I'd verify the facts and then terminate her instantly. 

Renting your personal dwelling while owning and renting other houses, duplexes or apartments is a reasonable approach, and...Perhaps patience is a decent idea for you in this situation, because you may come out way further ahead if you wait to buy until July.

The rates are usually broken down by rating factors such as Location, Fire Protection, Age of dwelling, type of vehicle, etc.