@Account Closed I was in the same predicament as you before I purchased my first property with a VA loan.
What I did was figure out what my current living expenses were (rent and utilities which was about 1500/month). Then when I analyzed a property, I stayed realistic about most likely not being able to cash flow with 0% down. If I could, that would be great but as you have come to realize is that the 0% down increases your mortgage by quite a bit thus killing your potential cash flow. The goal I set was to dramatically cut down on my current monthly living expenses and coming as close to break even as possible so that my exit won't bite me in the ***.
Anyways, I'll use the house I just recently bought and am house hacking. It is a 4br2ba SFR. My current mortgage is $2400. I rent out 3 bedrooms for a total of $2150/month. Utilities have been averaging around $200/month. So with all of that, I am essentially paying $450 out of pocket per month for living expenses compared to $1500. That's $1000 extra saved every month! On top of that, it is right down the street from work so I save a ton on commuting and I also rent out some unused space in the garage to a coworker for some storage.
Be realistic and see what is going to work best for your situation. $100 per door or $300 per month or yada yada is ideal but everyone's situation is different.