Properties are low and rents are high (compared to what the houses are worth)- ROIs of 15%+.

BP also has 'The Book on Investing in Real Estate with No (and Low) Money Down' by Brandon Turner.

To start earning decent money it requires 2500 hours of experience in no less than 24 months, which means earning low wages (if any at all) for a minimum of 2 years.

The low end stuff is getting snapped up quick. 

If you don't need the monthly income, devote it to paying those loans down faster.I do also agree with others here that a fixed rate loan right now is the better option, as rates are likely to only increase after so many years of super low rates.

Can you BRRRR a Self Storage Facility?  

Most of these deals will be bought up all cash with low DOM.

I used the bigger pocket tool to analyzed it, the hard money lender and the sale price were the keys. if I can find low interest rehab loan, or I can sell the house for 150K, I could make profit.  

All those parameters will impact your numbers eventually.BTW: I think 6% property mgt. is a bit low (might not get you the value you need from it)

Luckily, I wasn't in the need to use my credit because I went from high 700s to low 700s once the card was fully reported.