One strategy I like to do is build in seller credits into my offers so the loan covers the closing costs, e.g. if you wanted to offer $500K for a property, offer $510K with $10K towards closing costs and that $10K is supported by the loan and can be used on the costs I mentioned above.

It's just like buying a house, as far as someone may ask for 2 or 3 weeks to do their inspections and get their loan approved, and then once that time period is over, then their deposit goes hard (nonrefundable) and they move towards a close. 

More info here:DSCR loans won't use your income to underwrite the loan.

There is a 2 level multifamily in National City (2x 2br and 2bath) that I am super interested in using my VA Loan for.

If you have over-improved the unit for the market, it is highly unlikely that you will reap a higher rent price...the market just doesn't support it. 

Originally purchased as my primary residence, using my VA loan.

I'm using an FHA loan to acquire a duplex.

I would recommend looking for homes that are for sale with FHA, VA or USDA loans as they are assumable and will save you thousands per year in interest costs! 

I gain occupancy at the end of the month, and looking to begin on some of these projects then.I am a newborn when it comes to the real estate world, but I am trying to retain all the knowledge possible to become successful in this space - building a team, what type of real estate to enter, loan buying options and experience, location location location, you name it.

I assume this is in LA...have you asked about the DP required to get a high balance conforming loan?