You may increase your chances of success in the Dallas real estate market by being proactive, carrying out in-depth research, and utilizing local knowledge to help you make wise investment selections.

How much is reasonable to increase rent?

To answer your question any property can cash flow if you increase the DP. 

I might be wrong but I am assuming the houses are also appreciating just because of the overall housing market trend but I believe the university is also expanding, thus increasing property taxes.

However rents increase   Most mortgages are fixed.  

Because if you did pull out equity to repeat, you will increase your payment on that property and that $600 cash flow will evaporate.

Would this increase my chances of the offer being accepted, considering the seller wouldn't have to pay an agent on my side?

There's great real estate events around the Tampa Bay area that attract investors and may be of value to you.

Its proximity to key transportation hubs, the Airport, and Tyler Perry Studios, along with other amenities, makes it an attractive area for this investment strategy.If you're leaning towards STR or MTR, you can consider areas like East Point or College Park.

Condo fees have increased dramatically that feel like you are making a payment on a luxury car.