My biggest mistakes that have cost me dearly have all been contractor related, so my advice would be to vet your contractors as much as possible. 

When I had my traditional HML company and 100% of our funds were investors

If that is the case, my ROI calculations should account for 25k of liens and I should place my bid accordingly?

Would you think changing my minimum stay on Airbnb would be worth it?

The other way I fund deals with none of my own money is using a private lender that I have years of experience and relationship with and/or using HELOC and other business lines of credit.

All of the advice I will give you is my opinion.  

Purchase price: $162,500 Cash invested: $75,000 I was offered this property directly before it went on the market from my agent.

I checked out the website for my market area and they're only listing the large nationals on it (Bridge: EasyKnock, SFR:  Buyer, Roofstock, Renovation Buyer: HomeGo, Homevestors) and was curious if any agents in other markets have seen this or use zavvie's information in any way?

it is mostly from what I've been seeing in activity in my STR, and in talking with some friends who manage restaurants.

My family has 2 portfolios in the area north of DFW.