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.

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

%1 rule is tough to find, but if your willing to out more down, you Can achieve cash flow.

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.

Note sweat equity such as a BRRRR can provide outstanding returns (We have historically achieve infinite return on our BRRRRs), but they are not passive. 

Never was anything great achieved without danger"I am hoping you know who the speaker of these quotes are.

Hey Jessica, I agree with @Pieter T Van Zyl that your 6% goal is definitely achievable in the CLT market and that the only issue with multi in CLT is inventory.

In our syndications, our LPs typically achieve a 1.75x - 2x equity multiple in 2-3 years and as the GP, I achieve a 2-4x on my investment.