I am a civil engineer, but I am currently doing my masters and working on my side business that brings in 6 figures a year.

When I found other doctors, laywers, engineers, a few years ahead of me... that is when my investing took off.

You can only 1031 exchange long term rental "Investment Properties" and property that is used for business "Owner Occupied".However, since this is hypothetical, if the IRS allowed you to 1031 flip properties, then you would pay taxes at your capital gains rate (once you sold the last property and didn't replace it) on all the gain from all the properties and 25% on any depreciation taken during the the hold periods.

Looking for a contractor that can replace bathroom subfloor ASAP.

For example, after refinancing you find a lender with better rate, does this happen and do people replace the original mortgage with a newer one?

Maybe they are just trying to get everything replaced by complaining so that they never have to pay anything out of pocket. 

The book recommendations on this thread are gold.In addition to being a voracious reader, I recommend looking into careers that pay well out of undergrad, namely software engineering, investment banking, and management consulting.

Also I am in a masters program at Montclair State university for software engineering so I figured, instead of paying someone else rent, the faster I get a property, the faster I wont be paying high rents near montclair.

How about a QR code on the shirts that links right to your booking engine/Airbnb profile? 

Also it appears you need to have your evaporator coil replaced due to door missing and large gap at the base of coil box.