One or two maintenance or plumbing /HVAC repairs and your profit is shot for the year.

Sometimes a year or two ago.

I am curious to get an update after you launch.

Welcome to BiggerPockets, Gerardo! 

I would not sell unless you have another place to move that is basically paid for.

Had the chance to do this flip with a close friend that did not have to capital to take it on themselves.

Utilizing the years of experience from the people on the forums will allow me to talk intelligently with a realtor, the property manager, the seller, and so forth.  

Tenants pay with Zelle, PayPal etc.Only takes me a few minutes per month to put in Excel.  

Hey Connor, welcome to BP! 

The plumber will likely have to cut open the ceiling to confirm and make repairs, so you can save a little money by learning how to do that yourself, confirm the problem, and then call the plumber for repair, then patch the ceiling yourself.As Jonathan is trying to point out, it's important to expect these things and have funds on hand to deal with them.