Most cost segregation firms will provide a free cost/benefit analysis quote to help you determine if the tax benefits from the study will outweigh the costs.

There is a huge gain probably in a more efficient gas system then oil so they are already getting some cost savings. 

Reach out to @Sean Graham of Maven Cost Seg.

The rent difference versus the offset of cost needs to be calculated. 

Flat Fee buyer agency to reduce acquisition costs (get ~2% of the sales price back), and flat fee MLS listing to reduce selling costs to ~$500.

Some investors prefer to start saving for these ASAP, while others plan to deal with them when they happen.The unknown is Maintenance costs, which are often dictated by how "hard" a tenant lives in a property.

At $1500/month might as well rent long term for maybe $1300 and just save all the expenses and be ahead.I'm happy to answer any questions about Dallas condos or other options if you have any. 

If you are going on your own, I would save up and then one deal is done move that money to the next deal and so on.

I recommend that you speak with a real estate accountant to see if you will benefit from a cost segregation first. 

You have $80K in your savings account, and you decide you want to invest in real estate.Knowing what you know now, what would you do with your 80K?