Are there any real estate markets out there where I can invest 300k (property(s) value would have to be at least 700k) and expect to get $3,000/month in cash flow? 

The average rents for comparable properties was $1,368The average sq ft was ~1100Most properties were 2/1's; most did not have a backyardAll properties had to mid-level rehab, some are very high-end and could be considered outliersAnalysis can be found at this spreadsheet. 

Lastly does anyone know of these lenders in the Philly / S Jersey area?

So here i am years later in my early 30's.

Would it be better to create an LLC or S Corp?

He's an older gentleman, around 80 years old, and has had the building since the 1980's.

Adding on to @Thomas S. comment about attitude. 

And then the s**t hit the fan and they couldn't even pay their full rent on Month 3. 

If you navigate the questions and listen, he will give some reason(s) that can usually go back to either time or money. 

I assign them to my S corp. my LLC, or my SOLO 401K.