That aggregator is not as reliable as Plaid so transaction importing is not very smooth and often involves having to reinput password, etc.Overall, for a small investor like me, I think Stessa is a good choice.  

We've submitted for verification but understand it can take 6 weeks or months.

You need a qualified and reliable builder (almost impossible for a new investor to find).

The in home test kit reliability is questionable unless they can provide peer reviewed test validation data.

I’ll test it by calling the seller for verification.

Added benefits of FHA Programs: if you qualify to purchase the home, after you make six on time payments you'll be eligible for a FHA Streamline (feel free to look these up, but the gist of it is: if the market drops 0.5% for mortgage rates you can refinance without an appraisal and without income verification).Advice: Start reaching out to Real Estate agents in your ideal area and be transparent.

I'm hoping to build a network of wholesalers that are reliable that I can consistently lend to for transactions.

Andrew and his company, American Private Money Group are not reliable or trustworthy.

Do a rental verification.

Quote from @Chris Seveney: @Jay Hinrichs100% agreeWhat we did was had a third-party company perform a track record verification report.