Deciding on a purchase price. How should I approach this ?

[Jimmy Edwards]

Hi Bigger Pockets,

I'm looking to purchase a Multifamily property, however, I'm a little lost about what I should set my budget at. To clear this up a little, I currently paid about $1100 in rent each month. I didn't want to purchase a property that would cost more than that per month. My concern is that if the vacant units don't rent in a timely manner I will be over-leveraging myself. 

With my original numbers, that would equal around a $100k property, However, if I follow the 50% rule to gain a rough estimate based on my markets rents I could possibly afford a $200k property and probably have a small positive cash flow. 

 Should I focus on the possible cash flow or what I can afford on my own? ( if that makes sense).