So it is important to buy a house in an area that she will attract those she is comfortable living with 

@Leland BannerThat is a great idea to try and attract new clients. 

What quality of tenants will it attract?

But it should NOT be commonplace.Look for 2.5-3x rent. no evictions. no felonies. decent history of paying their bills. no owed money to utility companies.If the tenant pool you are getting for your particular rental is not attracting tenants that meet those standards then you need to improve the property or lower the rent, or both.That will open the tenant pool up wider and allow you your "pick of the litter"

Is that even attractive for an investor for me to wholesale?

What I plan on doing is to knock down the ranch to the foundation and build back up with the same foundation size but add a 2nd floor and make a visibly attractive craftsman home.

If I apply the 50% rule to my area then I get the following- Purchase price: $150,000- 20% down payment: $30,000- Loan amount: $120,000 at 5% over 30 years- Monthly P&I: $644.19- Monthly rent: $1,200- Rent after expenses: $600- Rent after expenses and P&I: -$44.19I applied the 50% rule to home prices during the bottom of the market in my area and the returns are still not that attractive.  

I want to attract the best possible tenants, so I have painted, laid new carpet, and new bathroom light fixtures, but I am curious when upgrades becomes non profitable.

To attract investors we generally have fairly specific guidelines to follow as far as underwriting because that is what we told the investors we would do to protect their money.

It feels like a B2B marketing website to me, attempting to attract crowdfunding portals.