Next Income Property

[David Jones]

Hello Everyone,
I have a few questions and need some direction, all answers and advice are much appreciated. I just bought my first two family in May of 2013. I did an owner occupied FHA mortgage. I am looking to purchase another two family on the same street but I am now facing the challenge of coming up with 20% down because it will be tough to qualify through an owner occupied. I have close to 15 grand saved, but I would like to know what are my best options in purchasing my next property. How can I get ahold of more capital to put down without putting 10 grand into my account and the bank questioning where I got it from. I am also starting to feel like i want my own single family home, but if i buy another two family will I be capped out mortgage wise only making 80K a year.
My first mortgage is for 135,000 collecting 800/month for one unit.

Thank you