I've seen several ways but want to know the most efficient way to assess the value.

Along with the refi after a year or two, I would save up the cash flow to buy another property or contribute to the down payment to get to 78% LTV as fast as possible to avoid PMI and to be able to qualify for a regular loan.Based on everything I know, this plan seems to be the most efficient way to acquire as many units as possible in the shortest amount of time, but again I am fairly new and don't know all the possible options.

Course, that is market theory and how it works in most markets that are efficient.

Like a lot of you, I've read the Four Hour Workweek and was fascinated by Tim's use of VA's to help keep his day to day live as efficient as possible.

You almost have to become an expert in different areas of RE when you want to use them effectively, efficiently and according to IRS rules.

He did mine and did a great job--efficient, fair priced, knew what he was talking about, and didnt play any of the seller's agent games. 

Just make sure you are as efficient and economical as possible.

During these times one option maybe to hang out with your kids and wife.Work on being more efficient at investing and the benefits of using virtual assistants.  

What banks are most efficient, what sort of fees, minimum balances etc..  

As long as it is in the ira, it will continue in its tax deferred status...you will not pay tax until you start making withdrawals (typically in retirement).In my opinion, purchasing SFR with an ira is not efficient, as in rental property.