On the left menu, click Layers > Utilities > Sewer. 

What you intend to do with the property is vital.

layers of different colored paint on each of the 7(!!!)

You want to "control everything, own nothing" so as to be as unattractive a lawsuit target as possible.You want to assure that a lawsuit from one property will not endanger others, or at least not a "large" portfolio of smaller properties.You want emplace a layer of protection between your entity structure and yourself personally.

I am looking for deal (online or stores) with good quality (select grade or grade A/B) hardwood flooring (pre finished solid or engineering with more than 4mm top wood layer are preferred).

I am not a lawyer but here a few considerations:- An LLC will provide you with liability protection (in case something happens with your property, or inside your property, or in case your tenant decides to sue you) If you buy in your own name, you will not have this layer of protection so more exposed to the risks mentioned.- You may want to check with the bank if you plan to get financing.  

If the bottom layer of drywall you might have to replace those sections or the smell will remain. 

Then all properties must have GL insurance and personally get an extra layer of umbrella insurance.

The roofer wants to tear off existing roof (only 1 layer of shingles) and replace with 3 tab 60 mph rated shingles.

Better insulation and a double layer of 5/8 drywall.