Learning the numbers has been critical in helping me understand how to even begin to try to buy right. 

Curious if anyone could criticize the two Dallas properties posted on Roofstock (links below), such as the location/price/ROI, and/or provide alternative suggestion on passive investment in DFW/Austin area?

I'm also open to criticism. 

I am interested in critical feedback as well as recommendations for some of these cities to visit.

If you decide to sell, timing will be critical as the waiting period for the right time to go on the market may be shorter than the time it takes to recover the loss from subsequent purchases.

As critical or moreso that #1 aboveDo you have the funds? 

Kitchen/bathroom upgrades were critical for this property.

However, if critical areas exist on the site (steep slopes, wetlands, etc.), additional support may be needed from consultants like a geotechnical engineer or wetland biologist.3.

Even if you can't quite get a mortgage, having some cash to work with will be critical as you may be able to get seller financing or other leverage. 

I will say that it's harder to set up your own system... so make sure you partner with someone who has done that before who can help for the first time or two so you know what pitfalls to look out for and learn how to pick the right market, set up your team and properly set up your systems (team being the most critical part).