The town that have the biggest problems with them, from what I've seen, are stemming from two main things (again this is my opinion, no data to support it). 

If you want to start building a portfolio in Austin and have a long term strategy then house hacking a duplex or even picking up a SFH every 1-2 years could have solid returns, given historical data.  

Or please advise me on how to enter my data into the system to give me an accurate analysis.

Those were invaluable learning experiences and I'm thankful that my GPs were always willing to answer my questions regarding the investment.

It’s in lakeshore and I really think the area is going up in value.

Now as a commercial lender myself those relationships are invaluable, feel free to touch base if you want to chat about this anymore. 

I created a big spreadsheet, and find lending data goes stale every few months as rates and terms change. 

For STRs... what's the best way to gather the data on utilities, pest control, pool cleaning, general maintenance, etc...?

Terry Burger a close friend and associate of mine is a self-proclaimed data geek and his super power is understanding the retail consumer and how to find opportunities in current data trends.

Use the calculators that are here on BP . . .they are invaluable in sizing up deals and comparing them . . . the ""other costs" as Matt mentioned will often shock newcomers and can turn a  good deal into a "run away fast" type of deal.Call a slew of lenders as you will find points, processing fees, underwriting fees, attorney fees . . .and the list goes on to vary a great deal.