I'm in a similar situation as you, as I am currently carrying 2 mortgages (one with a second person on it). I also started a new business a year ago. It is doing well, but the income doesn't count yet. I'm also in the SoCal inflated real estate market, so having even 200k to invest will not get you far here (that's one down payment for a lot of properties).
You should check out Brandon Turner's podcast on real estate investing with No or Low Money Down (BP Podcast #92). He has a book on BP as well. It's not a how-to book, more a book on opening your mind to find creative ways to finance real estate. Partnering with others is a good strategy. If you can find someone in your circle that is willing to carry the loan, you can exchange that for an exchange of equity in the real estate and profits. Of course, it's probably a good idea to have them contribute some $$ into the down payment as well -- structuring the partnership is all about figuring out what is fair for both sides.
Let me know if you want more details. I currently have one deal using this strategy where we have an offer accepted and are about to go into escrow. Looking to buy 5 more properties using this strategy by the end of the year. Key is to have a good deal to begin with and being able to explain how it's a good deal to a potential investor.