Next Step - Where do I go from here???

[Eli Martinez]

Hello Bigger Pockets community,

   I purchased my first property in November of 2015.  It is a duplex in the city of Pomona, CA.   I am very lucky in that I bought it below market value, did some light fixing up and it has appreciated about 100K in 16 months. I currently rent out each unit which covers my mortgage and then some. I really want to get into fix and flips and I am considering selling the house so that I have start up capital.  Here is the breakdown of my property below. 

Mortgage - 2250.00 a month 4% interest. 

Rent paid by tenants -  2650.00

Water, Trash, Gardner 200.00

Passive Income 200.00

I would like to know if I should sell the property so that I actually have investment capital for a flip or hold on to the property .    

Thank You,

Eli