If people do graffiti then it gets cleaned up quickly because Milwaukee has a graffiti task force.

In a S-Corp, you can have wages separated cleanly, but that is a different ball of wax and not generally applicable to rental holdings.On the active income, you can contribute with profit sharing up to 20% of your net business income.  

Your crossing into unchartered waters in many a facet, and, although I follow the method to your madness, the deal sounds like a dog with fleas.

Craigslist is probably better because you can see what others are asking for similar properties in the area.But, in my opinion, the absolute best method to determine optimal rental price is historical data, which is only available on MLS.

I am also planning to open a cleaning company that cleans my rentals to do some of my own cleaning and charge the company as well write off the cleaning supplies and what not.

This means that as of now my goals are very general: to learn more about RE investing, determine solid methods for purchasing without my own money (b/c I'm a poor college student), how to get my business off the ground, and wholesaling as a starting point. 

I just want to always be honing my method of calculating numbers because that is the hardest, most subjective and most critical part of the deal.Any advice would be appreciated.

All properties appear nice, clean and tidy, though I have only seen them from the outside. 

I used their deposit to replace all the carpet and have the house professionally cleaned, at first everything was fine, its been about 2 months now, and the new tenet is complaining of  a really strong cat (probably Urine) smell in the master closet, an area we had the carpet replaced. it is a slab foundation, any cheap tricks to get it fixed, I honestly don't know what to do, I would have thought to hire cleaners or replace the carpet, but both have already been done.Thanks in advance for your help,Nick

If your roofer can tell that the pitched portion of the roof has 8 layers on it, I would think he should have been able to do the same for the flat portion using the same methods, unless this area had no exterior edges because of where it was positioned on the roof.