Am I ready to buy a rental property if this is my situation....

[Account Closed]

Currently we have $100,000 in cash. 

I own 2 businesses and they both are in year 3. In year 2, we generated about $50,000 in profits from one business (50-50 as I split it with a partner) and $30,000 in profit from the other.

My credit score is 740. 

My two main questions:

1) Since I don't technically have an income because the money we earn just goes in the bank account, how can I show to the banks that the mortgage will be paid. Can they look at the business income? 

2) Since I have $100,000 in cash and a above average credit score, how much can I leverage that cash? Can I look into properties that are lets say about $700,000? I know the standard down payment is about 20% but there are loans where I can put less money down. I would be looking at a multi-unit property. 

I am 25 years old and relatively new to the whole real estate investing world. Hope the information about is straight forward and not ambiguous. Thanks for your input!