The industry is mature and margins have properly compressed.

If that’s the case, I’d recommend considering areas outside of Dallas proper where you can still find properties with strong growth potential.Cities like Prosper, Melissa, Princeton, and Anna are excellent options to explore.

If I have some cash do you recommend clearing the loan or invest instead for next property with proper planning ? 

Happy to serve as a resource if you have any questions about the local market.

@Jeff Nash would be a great resource to speak with on companies/investments to offset your W2.

That means that not only are they resourceful, their dialogue is effective, informative and useful in you making your decisions.You evidently haven't found someone with the level of expertise you'd prefer. 

It is very competitive but if you utilize good resources and think smart you can do really well!!

Partnerships: Collaborate with other investors or professionals to pool resources and expertise.4.

This is a great place to learn and to connect with people so take advantage of all the great resources.

So, there must be a way to do this properly, as they must be doing it.