Why pay off the mortgage early? 

If you have cash, you could pay off the underlying loan2.

@Parmesh P. there is no such TDA paying 7% or even 6% long term,5 years or longer.

As long  the tenants pay the rent each month, increasing their rent will be very tough and getting them to leave will be extremely tough. 

@Simon Packman Not sure where you’re located but I have Vermont Mutual in Northern New England for most of my properties and the most I’m paying for any of them is around $4400.

My realtor is asking for $3000 flat fee + additional listing broker compensation  of $400.What would you pay total for buyer/seller?

I know you want to go full time and jump in, but I'd recommend staying with your day job as long as you can - it makes your life a lot more comfortable to have a steady stream of income to pay the bills every month!

Also, providing value to others at a high level will pay off for you in the end if you stick with it.

I also have a mortgage on this property paying $683 a month.Now I'm deciding should I continue waiting for a possible tenant or should I just sell the property.

I LOVED getting a loan through DR Horton on a DR Horton build, that I had to pay for a DR Horton appraisal.