Beating the multiple rental property loan poison pill

[Anthony R.]

Okay so a quick background so you can understand how I cornered myself in this position. 

Background:

When I got out of the Army I bought a duplex foreclosure with my former wife. We divorced about a year later and sold it for almost double. Being probably the only man in the world that profited from divorce, I was hooked. 

I spent about a year and a half renting a studio apartment, finishing my degree, eating ramen, raising my son, job hunting and craving to build my portfolio again. 

Long story short, it's now been 4 years and I have two four family buildings, and positioning to buy my next building. 

The Buildings:

Building 1:

Units: 4 Fully Rented

Financed: GI Bill - No PMI

Condition: Good

Location: Great

GRM: 55

Cash flow: Positive - 40% profit margin after expenses 

Building 2:

Units: 4 - 3 Rented, I live in 1

Financed: FHA - PMI from hell

Condition: Fair-Good - I do repairs every month though to continue to improve it.

Location: Great

GRM: 64 (drops to 47 if I move out)

Cash flow: Positive - 11% profit margin after expenses (jumps to 36% if I move out)

After you take out monthly repairs the two buildings combined generate a 14.5% profit. Not including the equity in the property of course. 

The Problem:

If I want to get another loan to buy my next building then I need to carry a ton of cash. First, I need to have 20% down because it's going to have to be a conventional loan. So that's going to be between $14-20k if I am looking for a duplex. Second, I need to carry 3 months of expenses for both of my current buildings PLUS 3 months for the next building. Just my buildings alone are going to require $10k. So assuming I find another building that I am interested in, without taking into consideration that it will need repairs, I will need to have on hand somewhere between $27-37k. I'm close to this already but I don't want to tie it all up in real estate.

My question:

Give me a blue print. I need a map. I have gone almost as far as I can with the freely available advice on the web. I need a building purchasing plan. How do you do it? How do you go from being poor to having 100 units? Everyone I meet either is looking to break into rental investing or already has over 100 units. I don't find many people stuck in this financial purgatory. I mean, I'm not complaining, I do okay for myself. I don't go to work each day and fear losing my job. That's a nice place to be. However, if I don't figure out what my next step is I am going to lose my mind. I have been grinding on this for over a year now attempting to decide what the next step is. Do I sell and trade up? Do I hold onto what I have and save until I can buy something out right? Do I continue to take loans? Am I missing some fundamental part? 

My only hang up is that I don't want a partner. I don't play nice with others and people have a tendency to let you down when you need them. What ever plan I decide on needs to be self reliant. 

Thanks for any advice you can offer. My cup is empty. I'm ready to learn.