You identify the problem (lack of deposit) during your inspection phase, then hit them with an objection that requires them to pay you a deposit at closing.

That means ar 7% interest they should be paying $1166 JUST IN INTEREST.

Just keep in mind, you get what you pay for.So where are these Mentors?

I like the option of putting more down if you’re paying 7% plus interest.

I’m POSITIVE you aren’t saying they are reporting non-payment when you are paying.

Get copies of the lease and proof that they are paying on time and yes get an estoppel certificate. 

There are a couple of lenders that'll go to 80% which would be better, but still wouldn't give you anything to work with as far as paying down property B.

You might find a HML hard money lender that may offer this but your going to pay a ridiculous rate and points/fee's.  

If your budget is so tight that you can't handle a small leak, what will happen when a tenant fails to pay the last month of rent and abandons the property with $6,000 in cleaning and repairs?

They may have a # in mind but you should have an idea what its worth.then do I take that number and find a buyer at that price?