That said- I’d love to hear the pros and cons of putting all properties into one LLC vs. each individual property being in its own separate LLC.Any insight would be greatly appreciated!

If all of these incomes are hitting your personal returns then that's one situation, and if they occur on separate returns that's a different one.  

.#6 - Look for lot size, living area size (above basement) GLA or Gross Living Area (add basement separately) Below Grade living area. #7 - How many total ROOMS, beds, baths, fireplace, pool, extras, remodeled (year) view, condition etc#8 - Garage, on-street parking, off-streetLook for 3 comparable sold properties and 3 comparable active for sale properties. 

I dipped a toe into real estate investing last year through one hard money lending deal and a separate house flip. 

You just keep the money in a separate account and pay interest on it for 30 years?

They all have separate electric but they share water.

@Greg Scott make sure you separate rent from maintenance requests.

This WH is electric per the pictures.I'm going to be the contrarian and say move the heater, or box it in some way to separate it from the closet.

You need a separate filled out form per applicant for each year 

You may want to consider asking a Property Management Company for this information.The asset management fee is its own separate fee that is collected from the GP managing the property.