A good guide for navigating multi's is Larry B. Loftis's Guide to Investing in Duplex, Triplexs and Quadplexes. The references are great, but the loan stuff is a bit outdated. But since you're using the VA loan, you're still at 100% financing.
Note: Multi's stack in what a lender will pay per multi. Example: A 300K SFR does not Equal a 300K Multifamily in the sense that each unit is an income producing unit. You may qualify for the multi, but not the SFR.
*I am not a mortgage underwriter*
If you have no rental experience, they will take up to 75% of appraised rental value per unit to add to your income.
*I am not a Title Company or Lawyer*
At Closing, if you utilize a bank that has First Time home owner perks you could get a substantial amount back at closing depending on what month and what day of the month you close on. In essence, you could get a check at closing instead of having to bring money.
Your title company or lawyer will help you with that.
This is just a sample of the perks for using the VA loan and multi's.