I’m curious—what creative financing solutions have you found effective in the current market?

Does your family member leverage a dynamic pricing tool like PriceLabs?

As one house is paid off, start paying off the next one, and it will have a snowball effect. 

Any delay or failure in the performance by Landlord hereunder shall be excused if and to the extent caused by the occurrence of any event that is beyond Landlord's control, such as fires/ floods, earthquakes, wars, sabotage, terrorism, vandalism, governmental acts, injunctions, or labor strikes, acts of God and any other occurrences that are unavoidable or unpreventable despite reasonable efforts to prevent, avoid, delay, or mitigate the effects thereof."

The BiggerPockets' "Find a lender" tool is a great option for connecting with reputable, investor-friendly lenders. 

It’s awesome that you’re diving into creative financing with the subto strategy—it’s a great tool for investors.

Any other tools you’d recommend?

If you have 100k, and your credit is 700+ then you're ready tool wise. 

Or does anyone find that having a 5 or 6 day minimum is also effective?

Usually when you are shopping around for attorneys while also asking if anyone has used legal zoom, that individual is looking for the most cost effective solution.