Perhaps it makes sense to consider a blanket portfolio loan to efficiently extract what equity I can, then set up a separate line for emergencies.  

What's the best method to acquire rental property using OPM and the most efficient strategy to pay it back?

YMMV, but open communication with tenants usually results in a plan agreeable to all.Note, we do like to have our one-year leases start and end Aug 1, so the first lease we made with the new tenants was just for 10 months.Definitely do not ever use a security deposit for rent payment.

Never allow VA’s to communicate with one another.

A better approach to protect all parties is to put everything in writing and communicate via fax or email. 

It is way more efficient.

They will compare it to the house down the street that has been on the market for a year with paneling and green carpet, and say yours is actually worth less than that They are totally oblivious to the fact that it is they who stand in the way of the free market, and it is the market that assigns value most efficiently.

one of the most diligence and let you you see network who call or email communication .while can be contacted by customers contract for REI. 

The only difference is the speed at which they do it, communication and how much each charges you to sign papers aka settlement fee, it ranges from $100-300 here.

Important items to note:Need a licensed/bonded General ContractorKeep it simple use a GC - do not need to coordinate yourself and gather individual estimatesYou want to make sure they have a verifiable track record working with this productFinancial Capacity is important as you want someone who can fund and carry the project to enhance your speed and efficiency.