Is this accurate?

I provided a recent appraisal with accurate estimates of replacement cost, which has been updated to match that estimate.

This will provide you with a more accurate picture of your potential ROI (Return on Investment).

Also you should have a GC that walks your properties and gives accurate estimates before you do the inspection.

At this stage, I hope to have enough experience, and the network to be able to accurately estimate total expenses, allowing me to move towards bigger projects with bigger potential gains.Any advice on ways I can move forward with my goals?

IMHO,  whats important is to walk the property, otherwise, you are taking a vegas gamble with not being able to see the inside. 

That is, the only accurate number here is your purchase price.  

Now, Austin is now becoming California, but if you live here and are renting then you have better options as an owner occupant, than as a pure investor in Austin.If my Assumptions are fairly accurate, then listen up, if not disregard.Buying a new built house in Austin on limited funds, hoping to sell it in two years so that you can make a tax-free profit, is NOT A GOOD STRATEGY!

Having confidence in your ability to evaluate the deal and that your numbers are accurate? 

Do I have a legal duty to review my ads to ensure that they are accurate?